Story Summary

Boston Marathon Terror Attack

marathon-bombTwo explosions occurred near the finish line at the Boston Marathon on Monday about four hours after the start of the race. Three people were killed and more than 250 were injured.

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BOSTON (CNN) — The surviving suspect in the Boston Marathon bombings has cited the U.S. wars in Afghanistan and Iraq as motivating factors behind last week’s attack, a U.S. government official said Tuesday.

Dzhokhar Tsarnaev has been able to communicate with investigators in a limited fashion from his hospital bed and told them that neither he nor his brother Tamerlan, now dead, had any contact with terrorist groups overseas.

The official cautioned that the interviews were preliminary, however, and that Tsarnaev’s account needs to be checked out.

The 19-year-old has told investigators the brothers were self-radicalized via the Internet.

Investigators also are looking into whether the online English-language magazine Inspire, put out by Al Qaeda in the Arabian Peninsula, was used for instruction on how to make the bombs, but another source cautioned that other outlets could have provided that information.

The twin blasts just before the finish line of the April 15 race killed three people and wounded more than 260 and turned a chunk of downtown Boston into a crime scene, disrupting the normal routines of countless others.

Authorities slowly began allowing residents and business owners back into the area Tuesday.

There was no word on when the street where the bombings occurred will be fully open to the public. That, the city says, will depend on how quickly building owners can make repairs and other issues.

Business owner Ed Borash was among those who returned Tuesday. He said he and his son narrowly missed injury in the bombing.

Helena Collins, a businesswoman in the area, said it was important to get up and running again, but not just for economic reasons.

“For us and our business, it’s really about how do we get back to Boston, how do we band together, how do we help those that were seriously injured that are going to have lifelong struggles,” she said.

As of Tuesday evening, 43 people injured in last week’s attack remained hospitalized, one of whom is in critical condition, according to a CNN tally.

Meanwhile, two victims of the bombing were laid to rest.

Family members of 8-year-old Martin Richard held a private funeral Mass Tuesday, his parents said in a statement. A public memorial service is planned, they said.

“The outpouring of love and support over the last week has been tremendous,” Denise and Bill Richard said in the statement. “We laid our son Martin to rest, and he is now at peace.”

Family, friends and colleagues mourned slain Massachusetts Institute of Technology police Officer Sean Collier at a private memorial service in Stoneham, Massachusetts, CNN affiliate WHDH reported.

A memorial service open to law enforcement officers and the MIT community is scheduled for Wednesday on MIT’s campus, the university said.

New details on officer’s slaying

Collier was killed Thursday night, near the beginning of a wild 24 hours that culminated in Dzhokhar Tsarnaev’s capture in the backyard of a home in Watertown, a Boston suburb. Authorities suspect Tsarnaev and his 26-year-old brother of killing the officer, though Dzhokhar Tsarnaev has not been charged in Collier’s death.

According to a source with direct knowledge of the investigation, Collier didn’t even have time to activate his emergency alert before being shot four or five times in the chest and head as he sat in his patrol car on the MIT campus.

It’s not clear why the brothers allegedly ambushed the officer, the source said.

The source said investigators believe the Tsarnaevs then carjacked a black SUV, took the driver hostage and drove past the scene of the shooting before going to a gas station.

Carjacking victim tells his story

Investigators believe Tamerlan Tsarnaev carried out the car jacking while his younger brother was nearby at the time, a U.S. official told CNN Tuesday.

In an exclusive interview with CNN affiliate WMUR, a man identifying himself as the carjacking victim said he was worried for his life.

“They asked me where I’m from. I told them I’m Chinese,” WMUR quoted the man as saying. “I was very scared. I asked them if they were going to hurt me. They said they won’t hurt me. I was thinking, ‘I think they will kill me later.’”

The man escaped when the brothers stopped to fill up the gas tank, running for his life as one of the brothers swore at him, WMUR reported.

Soon after, the brothers encountered police, setting off a furious gun battle in which authorities say they fired handguns and hurled explosives at pursuing officers before Tamerlan Tsarnaev was shot. As the younger brother fled in the vehicle, he apparently ran over Tamerlan, authorities said.

Suspect shopped at fireworks store

More than two months before the marathon bombings, Tamerlan Tsarnaev bought two reloadable mortar style fireworks a New Hampshire store.

On February 6, Tsarnaev had one question for a store assistant at Phantom Fireworks in Seabrook, New Hampshire: “What’s the biggest and loudest thing you have?”

After that, store Vice President William Weimer said, Tsarnaev shelled out $200 cash for two “lock and load kits.”

Weimer said such behavior is very common in the store. He said the store notified the FBI after discovering that the marathon bombing suspect had bought explosives there.

Law enforcement officials told CNN earlier Tuesday that the number of fireworks bought at the store was not enough to set off explosions the size of those at the Boston Marathon.

“My assumption is they bought this, experimented with it and decided against it and moved on and found another source,” Weimer said.

Details emerge about boat, standoff

Tamerlan Tsarnaev was pronounced dead early Friday. On Friday night, police captured Dzhokhar Tsarnaev hiding inside a boat in a backyard.

Boat owner David Henneberry told CNN affiliate WCVB Tuesday that his obsession with how his boat was stored just right led him to discover the suspect as he stood on a ladder replacing two pads that had fallen out of the shrink wrap protecting his boat for the winter.

“I got three steps up the ladder and rolled the shrink wrap. I didn’t expect to see anything, but I saw blood on the floor of the boat. A good amount of blood. … And I looked back and forth a couple of times and my eyes went to the engine block and there was a body,” he told the affiliate.

Henneberry said Tuesday that he doesn’t even remember climbing down the ladder and running to the phone to dial 911, delivering the tip that would lead to Tsarnaev’s capture.

“I didn’t waste any time. I didn’t ask him if he wanted a cup of coffee. I was off that ladder. That is all I remember,” he told the affiliate.

Investigators swarmed the scene, forming a perimeter. Multiple shots rang out from behind the house, Boston Police Superintendent William Evans said Tuesday.

Authorities are still investigating whether Tsarnaev was armed and whether a shootout occurred at the boat, Evans told reporters.

“Clearly from everybody’s vantage point, we could see whoever was in that boat was poking at that top,” he said.

It wasn’t clear at the time, he said, whether the suspect had a handgun or was trying to poke a hole in the boat’s cover. After a standoff, hostage negotiators persuaded him to surrender, Evans said.

Investigation continues

The Tsarnaev family is from the Russian republic of Chechnya and fled the brutal wars there in the 1990s. The two brothers were born in Kyrgyzstan; Dzhokhar became a U.S. citizen in 2012. His brother was a legal U.S. resident.

Although Tamerlan Tsarnaev had become increasingly radical in the past three or four years, there was no evidence Tuesday of any accomplices or connections to extremists, a U.S. official said.

But Dzhokhar Tsarnaev conveyed to authorities that his brother believed Islam is under attack and its adherents must fight back, a U.S. government source said Monday.

Communicating with investigators by writing and nodding, Dzhokhar Tsarnaev has indicated that his older brother masterminded the bombings, the source said.

The younger Tsarnaev has been charged with using and conspiring to use a weapon of mass destruction resulting in death, as well as one count of malicious destruction of property by means of an explosive device resulting in death.

The U.S. official said Tuesday that investigators have determined that the pressure cookers used in the attacks were purchased at a Macy’s department store.

Suspects’ family members react

In a statement issued through their lawyers Tuesday, the suspects’ sisters — Ailina and Bella Tsarnaev — said they were saddened “to see so many innocent people hurt after such a callous act.”

“As a family, we are absolutely devastated by the sense of loss and sorrow this has caused,” they said. “We don’t have any answers but we look forward to a thorough investigation and hope to learn more.”

And Tamerlan Tsarnaev’s wife, Katherine Russell, issued a statement through her attorney’s office saying she is “doing everything she can to assist with the investigation” and said she and her family are shocked and distraught.

“The reports of involvement by her husband and brother-in-law came as an absolute shock to them all,” the statement said.

The suspects’ mother, Zubeidat Tsarnaev, said Tuesday that she believed her sons had been framed.

Speaking from her home in Dagestan — a Russian republic on the Caspian Sea — Tsarnaev said she thinks her older son died because he was a Muslim and charged that authorities silenced her younger son to prevent him from defending himself.

She said family members have arranged for Tamerlan Tsarnaev to be buried at a mosque in Cambridge, Massachusetts, Tuesday or Wednesday.

An official with the Islamic Society of Boston said it has not received any funeral requests from the family. A spokesman for the chief medical examiner’s office also said officials there have heard nothing about plans by the slain suspect’s family to claim his body.

katherine-russellBOSTON, MA (CNN) — The wife of deceased Boston Marathon bombing suspect Tamerlan Tsarnaev is “very distraught” and “cries a lot,” her lawyer told CNN Monday.

The FBI wants to interview Katherine Russell about her husband, but for now, agents only have been able to talk to attorney Amato DeLuca.

“She knew nothing about it at any time,” DeLuca told CNN’s Chris Lawrence, referring to the bomb plot.

Russell, 24, learned through news reports that the father of her 2-year-old daughter was suspected in the attack, DeLuca said. “That’s my understanding.”

Hearing that news devastated her, he added.

“The whole family is a mess, to put it bluntly,” he said. “They’re very distraught. They’re upset. Their lives have been unalterably changed. They’re upset because of what happened, the people that were injured, that were killed. It’s an awful, terrible thing.”

Tsarnaev’s domestic violence arrest

While it’s unclear when Tsarnaev and Russell began dating, the couple married on June 21, 2010, according to marriage records at the Cambridge City Hall.

Eleven months earlier, Tsarnaev was arrested, accused of domestic assault and battery against his girlfriend at his home in Cambridge, police records said.

The police report was redacted to hide the girlfriend’s name, and a police spokesman would not confirm it was Russell.

The woman, who was “crying hysterically,” called 911 to report that she was “beat up by her boyfriend” on the afternoon of July 28, 2009, Cambridge Police Officer Angela Pereira wrote in the arrest report.

Tsarnaev told Pereira and another officer that his girlfriend “was yelling at him because of another girl.”

“I asked the suspect if he had hit the victim, and he stated ‘Yes, I slapped her,’” Pereira wrote.

The girlfriend told police Tsarnaev hit the left side of her face. “No visible marks were seen,” Pereira said.

NPR’s Laura Sullivan reported Friday on an interview with unnamed women she described as Russell’s close friends and college roommates.

“They described Tamerlan as very controlling and very manipulative of their friend,” Sullivan said. “They say he was combative and angry. He would often call (Russell) names and insult her. He would call her a slut and a prostitute, and they remember fights that they would get into where he would fly into rages and sometimes throw furniture or throw things.”

Russell dropped out of school after she became pregnant in her senior year, the women told Sullivan. “They say that she really pulled away from her friends, that she cut off contact with them, and she also cut off contact with her family members which her friends had been in contact with,” she reported.

Couple lived apart

Russell was born and raised a Christian, but she converted to Islam after marrying Tsarnaev. She’s an observant Muslim and wears a headscarf, her lawyer said.

Katy — that’s what family and friends call her — lives with her parents in North Kingstown, Rhode Island, and works as a home health aide, he said. “She worked many, many hours.”

Their daughter lived with her husband because she worked seven days a week, he said.

“She would go off in the morning, she would work ’til late at night,” he said. “She called to see how her daughter was and that kind of stuff, like any person would.”

Tsarnaev’s wife is not talking yet

The Russell family hired DeLuca on Saturday, after federal agents contacted them asking to interview her, he said. For now, he is the one speaking to the FBI.

“She understands the need for doing it,” he said. “This is the way the government looks at it, and she understands this. It’s a threat to national security, and she gets that. And she’s a really good person, very sympathetic to that. Katy’s just trying to bring up her daughter.”

Russell may release a public statement through her lawyer soon, he said.

The family released its own statement Friday, after learning Tsarnaev had died.

“Our daughter has lost her husband today, the father of her child,” the family said. “We cannot begin to comprehend how this horrible tragedy occurred. In the aftermath of the Patriots’ Day horror, we know that we never really knew Tamerlan Tsarnaev. Our hearts are sickened by the knowledge of the horror he has inflicted. Please respect our family’s privacy in this difficult time.”

Former FBI agent discusses the Boston bombing suspects and the investigation.

Cambridge, Mass. (CNN) — The first image the nation saw of the two brothers may serve as more than a pivotal clue to investigators in the Boston Marathon bombings.

It is, perhaps, a snapshot of their relationship: One leads, the other follows.

That’s how some friends remember the Tsarnaev brothers: At 26, Tamerlan was seven years older than his brother Dzhokhar, who followed his big brother around like a puppy.

And with their father in Russia, the older brother may have become a father figure to the 19-year-old these past few months.

At 6-feet-3, Tamerlan was, by many accounts, an intimidating presence with increasingly strong convictions about society and religion in recent years.

But the picture that is emerging of the now infamous brothers is also fuzzy — just like the surveillance video.

An investigator who studied their video images after the bombings said the two brothers “acted differently than everyone else” — they stuck around and watched the carnage unfold, and walked away “pretty casually.”

Acquaintances of the brothers, now dredging their memories, find themselves short on clues. Many say both were likable and well-loved in their neighborhood, not loners driven away by society.

The casual air of the brothers seemed to mean nothing before Monday, April 15.

‘He was a big friendly giant’

Luis Vasquez had planned to watch the finish of the race with his family, but the hectic pace of raising two young children altered his plans.

Vasquez had been friends with Tamerlan and one of his sisters in high school. They would hang out together at cafes and talk about boxing, Tamerlan’s real passion.

Vasquez also coached the younger brother in soccer at Cambridge Rindge & Latin School.

Reflecting on what transpired this week, he can’t help but think of the what-ifs. What if he had attended the marathon?

“I wonder if they had seen us … if they would say anything to us or if they would’ve acknowledged us in any way,” Vasquez said. “That kills me to know, because we were going to be there.”

As the oldest of four, Tamerlan seemed to see it as his duty to make sure his siblings didn’t forget their Chechen roots. He was about 16 when the family arrived in America.

One sister had an arranged marriage awaiting her in Chechnya, Vasquez said, and “he felt the responsibility to make sure she stayed in line with that.”

That sister enjoyed the freedom of America, and Tamerlan had “an issue with that.” He was like a shadow, always lurking in her presence.

“There was pressure to stick to your ways, your religion, your culture — to respect that,” said Vasquez.

But he saw no seeds of terror.

“He was a big friendly giant. … There was nothing weird about him, nothing alarming,” Vasquez said. “He never went around and tried to force his views on anyone.”

Vasquez said he has “very positive memories, very positive interactions.”

“The crime doesn’t fit the memories.”

Clearly, if the allegations against the brothers are true, something changed.

Vasquez thinks someone must have “got in his (Tamerlan’s) ear and he passed that along probably to whoever he could recruit” — in this case, he believes, the younger brother.

“In what I’ve seen of their personalities, the brain behind this is the older brother,” Vasquez said. “When it comes to the two of them, he would lead and the little brother followed.”

The neighborhood in Cambridge where the family lived at 410 Norfolk is a melting pot of America — a mix of working-class immigrant families and college intellectuals who attend Harvard and MIT.

It’s not unusual for immigrants here to return to their homeland after high school. In fact, it’s almost a rite of passage. Residents don’t think twice when a neighbor travels to their country of origin.

Yet it is on visits back home in recent years, investigators say, that Tamerlan became radicalized.

Shortly after returning from a six-month trip last year, he uploaded several videos to his YouTube account, including one of a well-known jihadist.

Back in 2011, according to the FBI, Russia asked the FBI to interview Tamerlan “based on information that he was a follower of radical Islam and a strong believer, and that he had changed drastically since 2010 as he prepared to leave the United States for travel to the country’s region to join unspecified underground groups.”

While investigators continue to pore over evidence and documents, those who knew the brothers say their anger over the bombings is compounded by their confusion — that two nice guys may have taken such a dark turn.

‘I teach a guy to fight, not kill’

A couple miles from the family home is the Somerville Boxing Club. Hundreds of boxers have come through the doors over the years.

Trainer Gene McCarthy has been there for three decades and remembers the day Tamerlan, then 16, walked in with his father.

The dad was an amateur boxer in Chechnya and wanted his oldest son to get even better training.

Tamerlan was a physical specimen: 6-foot-3 and 196 pounds. He had a long reach, great quickness, tenacity and confidence — the perfect combination of a young Muhammad Ali.

He wouldn’t just knock out his opponents; he would annihilate them. “When he threw a punch, he was always right on the money, right on the target,” McCarthy said. “Nobody could touch him.”

After winning one fight in January 2004, the rising sensation told the Lowell Sun newspaper that he grew up in Grozny, Chechnya, and moved with his family to the United States the year before in hopes of starting a new life.

“I like the USA,” Tamerlan said. “America has a lot of jobs. That’s something Russia doesn’t have. You have a chance to make money here if you are willing to work.”

McCarthy ranks him as one of the best fighters he’s ever trained. He won the open class heavyweight division for the New England Golden Gloves.

The kid could’ve taken a gold medal at the Olympics, he said, but his immigration status prevented him from trying out for the U.S. Olympic team.

“I would say, ‘Geeze, I’ve got an Olympic champion but he can’t qualify,’ ” McCarthy said. “That was his only downfall — the fact he wasn’t a citizen. … He had the gumption and everything to win it all. He was fearless.”

At the gym, the younger brother, then just 10, would tag along and do calisthenics with Tamerlan. “He was a cute little kid,” McCarthy said.

He recalled registering Tamerlan at the Golden Gloves.

“While he was waiting in line, he saw a piano and was playing classical music like it was Symphony Hall,” McCarthy said. “Everybody in USA Boxing heard it, and they went in there and they were amazed.”

Boxers in his gym typically come from troubled backgrounds — broken families, crime-ridden neighborhoods, absentee fathers.

That wasn’t the case with Tamerlan who had a solid family support system. His mother, father and younger brother would come to the fights. He went undefeated in his two years with McCarthy.

McCarthy tries to instill self-respect and discipline in his fighters. “That’s what boxing means to me,” he said. “Train them that, and they can become respectable people — believe it or not.”

His emotions ranged from anger to dismay when he learned the brothers were suspects in the bombings. “I teach a guy how to fight, not kill,” he said.

McCarthy sighed. Tamerlan was such a likable person; the only people who didn’t like him were the guys he beat to a pulp in the ring.

“He was just a young kid then, and that’s about all I can say as far as that goes. I can only say nice things about him.”

Tamerlan switched to a different gym after two years. They didn’t have a dispute, McCarthy said. It’s just the way it goes in the rolling stone life of boxing. The kids come and go.

Yet Tamerlan didn’t give up his dream. He registered again with USA Boxing from 2008-2010, but he never regained his undefeated form.

In 2009, his uncle Ruslan Tsarni had a falling out with Tamerlan. “I got into really a state of shock from changes I heard — I wouldn’t say I saw — I heard from Tamerlan,” he told CNN.

The uncle recalled a phone conversation in which Tamerlan called him an “infidel.” The young man also told his uncle he was not concerned about work or studies because God had a plan for him.

Soon, Vasquez said, he vanished from his neighborhood. “I wonder what happened in that time we stopped seeing him around.”

‘I think his brother put him up to it’

If Tamerlan was the reserved one, Dzhokhar — known as “Jahar” — was the outgoing kid, always quick with a joke. That was one of his goals, his friends say, to make them laugh.

The only time they’d seen him mad was if he lost a wrestling match. Even that was rare. He was an all-star, 135-pound wrestler who placed in the state finals.

One friend remembered seeing how happy Dzhokhar was at the TD Bank Garden arena last year when he became an American citizen.

It was an especially patriotic day for those in attendance because the ceremony was held on September 11, 2012, a date that seems tragically odd in retrospect.

“Right now, it’s like a big puzzle and we’re trying to put pieces together,” said one family friend who asked not to be identified.

Dzhokhar was kind-hearted, too. When he wasn’t wrestling in high school, he volunteered at an after-school program to help kids with autism and Down syndrome.

“He was a funny comical guy. He had me laughing a lot,” said Peter Tenzin, who co-captained the wrestling team with Dzhokhar.

“After wrestling practice, he would rather go down and spend time with kids with learning disabilities than relax and go home.”

The city awarded Dzhokhar a $2,500 scholarship, and he assimilated well with students at the University of Massachusetts-Dartmouth, where he was studying engineering.

Like so many in the family’s neighborhood, Tenzin faults the older brother — saying he likely brainwashed the friend they knew.

“All I can say is I think his brother put him up to it,” Tenzin said. “There’s no way in heck that he would do it. Mentally, he’s just not that kind of guy.”

“He loved his brother and looked up to him, and that’s why I think (Tamerlan) put him up to this.”

Though similar stories are shared around the neighborhood, another picture of Dzhokhar has emerged in the last two days: of a young man who partied on campus after the bombings and allegedly joined his brother in gunning down a cop, carjacking a man in Cambridge, then engaging in a gun battle with Watertown police complete with pipebombs and an explosive device like the ones that wreaked mayhem at the marathon.

Tamerlan died in that shootout. The one person who can provide answers to the bombings is Dzhokhar, who was captured late Friday and remains hospitalized with wounds to the throat.

The latest news — that police believe the brothers were planning another attack — can only compound the confusion felt by so many.

“To see two brothers, both carrying leadership traits, flip the switch and jump into something so evil is astonishing,” said Luis Vasquez. “It’s not what we remember of them.”

Boston — With the second suspect in the Boston Marathon bombings captured alive, the nation waits for answers as to why all of this took place.

Federal law enforcement officials are pouring over evidence, and looking into the backgrounds of the two suspected bombers.

According to the Los Angeles Times, federal terrorism charges could soon be filed against 19-year-old Dzhokhar Tsarnaev, even as he remains hospitalized.

Tsarnaev and his older brother, 26-year-old Tamerlan Tsarnaev, are accused of setting off bombs at the marathon Monday, killing three people and leaving more than 170 wounded.

The Tsarnaevs arrived in the United States in 2002 after their ethnic Chechen family fled the troubled Caucasus region of southern Russia.

Chechnya is a predominantly Muslim area that has fought for full independence from Russia in the past.

On Thursday night, the brothers allegedly killed a Massachusetts Institute of Technology police officer before the older brother died in a shootout with police.

Dzhokhar Tsarnaev was captured alive Friday night after he was found hiding in a boat in a Watertown, Massachusetts, backyard.

He remained hospitalized Saturday afternoon at Beth Israel Deaconess Medical Center in Boston, where his brother was pronounced dead and where dozens of injured spectators were taken Monday after two bombs exploded at the finish line of the Boston Marathon.

The older brother traveled to Russia for six months in 2012 and law enforcement officials are now scrutinizing that trip to see if he met with extremists or received terrorism training.

In his weekly address Saturday morning, President Obama applauded the “heroism and kindness” on display in the aftermath of the bombings.

“Americans refuse to be terrorized,” Mr. Obama said. “Ultimately, that’s what we’ll remember from this week.”

WATERTOWN, MA — The second suspect in the Boston Marathon bombings was taken into custody Friday night, bringing to an end a massive manhunt in the tense Massachusetts capital worried by warnings the man was possibly armed with explosives.

After announcing the arrest on Twitter, Boston police tweeted: “CAPTURED!!! The hunt is over. The search is done. The terror is over. And justice has won. Suspect in custody.”

brother-bombingsAuthorities confirmed the man in custody is 19-year-old Dzhokar Tsarnaev, who escaped an overnight shootout with police that left his older brother Tamerlan Tsarnaev — the other man wanted in the bombings — dead.

The younger Tsarnaev was in serious condition at an area hospital, Boston Police Commissioner Ed Davis said at a news conference.

Tsarnaev was cornered late Friday as he was hiding on a boat in a backyard of Watertown, a suburb of Boston.

Police were alerted to his whereabouts by a man who went outside after authorities lifted an order for residents to stay inside during the manhunt. The man saw blood on a boat in the backyard, Davis said. He then lifted up the tarp covering the boat and “saw a man covered with blood,” he said.

It was that call that resulted in an arrest less than a week after two bombs exploded near the finish line of the Boston Marathon, shocking the nation and leaving a city on edge.

“There was an exchange of gunfire, and I don’t know if he was struck,” Davis said of the suspect.

Authorities, using a bullhorn, had called on the suspect to surrender: “Come out with your hands up.

Tsarnaev, according to authorities, refused to surrender.

“We used a robot to pull the tarp off the boat,” David Procopio of the Massachusetts State Police said. “We were also watching him with a thermal imaging camera in our helicopter. He was weakened by blood loss — injured last night most likely,”

Tsarnaev was taken into custody after authorities rushed the boat, Davis said.

The standoff and subsequent arrest came just minutes after authorities indicated during a news conference that a manhunt for the suspect appeared to come up empty.

Authorities had cast a wide net for the suspect, virtually shutting down Boston and its surroundings after a violent night in which authorities say the brothers allegedly hurled explosives at pursuers, after killing Massachusetts Institute of Technology police Officer Sean Collier and hijacking a car.

“We’ve closed an important chapter in this tragedy,” President Barack Obama said in a televised address. Even so, he vowed to seek answers to the motive in the attack and find out whether the suspects received any help to carry out their plot.

Word of the arrest spread quickly in suburban Watertown, where residents took to the streets to cheer the news that suspect had been arrested.

“Thank you. Thank you. It was our pleasure,” members of the Boston SWAT team said over a loudspeaker.

Mary Sullivan was walking her black Labrador earlier Friday night when gunshots rang out in her neighborhood.

“I’m glad it’s over,” she said. “The city and the people have gone through so much pain over these irrational decisions of these young men.”

Bombing connection

The manhunt began late Thursday just hours after the FBI released photos of the two suspects in the marathon bombings.

“Investigators are recovering a significant amount of homemade explosives” from the scene of the shootout, Procopio told CNN.

It was not immediately clear what explosives were recovered, but the discovery followed a tense night in which authorities say the brothers allegedly hurled explosives at pursuers after killing an officer and hijacking a car.

Tamerlan Tsarnaev, 26, was wearing explosives and a triggering device when he died, a source briefed on the investigation told CNN on condition of anonymity.

The manhunt brought Boston to a near standstill. The Boston Red Sox announced they were postponing Friday night’s game against the Kansas City Royals “to support efforts of law enforcement officers.” NHL’s Boston Bruins also postponed its game against the Pittsburgh Penguins.

The city’s subway, bus, Amtrak train and Greyhound and regional Bolt Bus services were shut down. Taxi service across the city also was suspended for a time during the manhunt. Every Boston area school was closed.

Boston’s public transit authority sent city buses to Watertown to evacuate residents while bomb experts combed the surroundings for possible explosives.

Initially, authorities said the brothers started their rampage by robbing a convenience store. By late Friday, the Middlesex District Attorney’s office backtracked on the allegation, saying an investigation determined that the robbery at a 7-Eleven was unrelated.

Officer killed

The violent hours leading up to the capture began in Cambridge, across the Charles River from Boston, MIT officer Collier was shot and killed while he sat in his car on Thursday night, the Suffolk County District Attorney’s Office said in a statement.

The two suspects, according to authorities, then hijacked a vehicle at gunpoint in Cambridge, telling the driver that they were the marathon bombers, a law enforcement source told CNN on condition of anonymity.

At some point, apparently at a gas station, that source said, the driver escaped.

Police, who were tracking the vehicle using its built-in GPS system, picked up the chase in Watertown. The pursuit went into a residential neighborhood, with the suspects throwing explosives at police.

A shootout erupted and ultimately one bomber — later identified as Tamerlan Tsarnaev — got out of the car. Police shot him, and his brother ran over him as he drove away, according to the source, who spoke on condition of anonymity.

Richard H. Donohue Jr., 33, a three-year veteran of the transit system police force, was shot and wounded in the incident and taken to a hospital, a transit police spokesman said Friday. The officer’s condition was not immediately known.

Another 15 police officers were treated for minor injuries sustained during the explosions and shootout, Jennifer Kovalich, a spokeswoman for St. Elizabeth’s Medical Center, said.

Suspects background

Police believe the brothers are the same men pictured in images released Thursday by the FBI as suspects in the marathon bombing that killed three people and wounded dozens on Monday.

At least 58 people remained hospitalized, including three in critical condition, according to a CNN count.

The men are shown in the images walking together near the marathon finish line.

The first suspect — apparently Tamerlan Tsarnaev, according to authorities — appears in the images wearing a dark hat, sunglasses and a backpack. The second suspect, wearing a white cap, is the one who remains at large, police said.

But the mother of the Tsarnaev brothers refused to believe they were involved in the marathon bombings and subsequent shootout.

“It’s impossible for them to do such things. I am really telling you that this is a setup,” Zubeidat Tsarnaeva told state-run Russia Today from Dagestan.

“My son would never keep it in secret. …If there is anyone who would know it would be me. He wouldn’t hide it. But there was never a word.”

The brothers came from the Russian Caucasus region and moved to Kazakhstan at a young age before coming to the United States several years ago.

“My youngest was raised from 8 years in America. My oldest was really properly raised in our house. Nobody talked about terrorism,” their mother said.

The suspects’ parents recently returned to Dagestan in the Caucasus region after living in the United States for about 10 years because they were “nostalgic,” the father, Anzor Tsarnaev, told Russian state-run Zvezda TV.

He accused someone of framing his sons. “I don’t know who exactly did it. But someone did.”

A federal official told CNN that Dzhokar Tsarnaev came to the U.S. as a tourist with his family in the early 2000s and later asked for asylum. He became a naturalized U.S. citizen in 2012. Tamerlan Tsarnaev was not a naturalized citizen, said the official, who spoke on condition of anonymity. He came “a few years later” and was lawfully in the United States as a green-card holder.

Tamerlan Tsarnaev had studied at Bunker Hill Community College and wanted to become an engineer, according to those who knew him. He then took a year off to train as a boxer.

‘I don’t understand them’

The official said that a posting on a social media site in the elder brother’s name included the comments: “I don’t have a single American friend. I don’t understand them.”

Dzhokar Tsarnaev attended Cambridge Rindge & Latin, a public high school, said Eric Mercado, who graduated a year behind the suspect. Mercado said Tsarnaev had worked at Harvard University as a lifeguard.

“We hung out; we partied; we were good high school friends,” Mercado told CNN.

“We’re all, like, in shock. We don’t really understand. There were no telltale signs of any kind of malicious behavior from Dzhokar. It’s all coming as a shock, really.”

Mercado said he lived a block away from the suspect and did not know his older brother.

Dzhokar Tsarnaev is currently registered as a student at University of Massachusetts Dartmouth, which ordered its campus evacuated on Friday. The school is located 65 miles south of Cambridge, just west of New Bedford.

Larry Aaronson, Dzhokar Tsarnaev’s neighbor and a former teacher at the high school Tsarnaev attended, called him a “wonderful kid.”

“He was so grateful to be here, he was compassionate, he was caring, he was jovial,” Aaronson told CNN.

BOSTON, Mass. (CNN) – The FBI on Thursday released photos and video of two men it called suspects in the deadly bombings at the Boston Marathon and pleaded for public help in identifying them.

white-hat-guyThe two men were photographed walking single file down Boylston Street near the finish line of Monday’s marathon before the explosions that killed three people and wounded about 180.

The man identified as “Suspect 2″ was seen setting down a backpack at the site of the second explosion “within minutes” of the blast, said Special Agent Rick DesLauriers, the head of the FBI’s Boston office.

“Somebody out there knows these individuals as friends, neighbors, co-workers or family members of the suspects,” DesLauriers said.

“And though it may be difficult, the nation is counting on those with information to come forward and provide it to us.”

But he cautioned that the men should be considered armed and “extremely dangerous.”

“No bomb-suspects-1one should approach them. No one should attempt to apprehend them except law enforcement,” he said.

Anyone with information should call the bureau’s toll-free number, 800-CALL-FBI (800-225-5324), he added.

In particular, DesLauriers asked for help from anyone standing in front of the Forum restaurant, where the second bombing happened.

Suspect 1 was seen wearing a light-colored, collarless shirt underneath a dark-colored jacket and wearing a dark baseball cap.

A man in dressed in similar fashion to Suspect 2 — in a light-colored hooded sweatshirt, a black jacket and a white baseball cap turned backward — had been identified as a possible suspect in the attack on Wednesday by two sources with knowledge of the investigation.

A law enforcement official who was being briefed on the investigation regularly said images showing two men near the marathon finish line were being circulated to state and federal law enforcement agencies Wednesday evening.

bomb-suspects-2But at a congressional hearing earlier Thursday, Homeland Security Secretary Janet Napolitano urged caution and pledged the investigation was “proceeding apace.”

“There is some video that has raised the question of those that the FBI would like to speak with,” she said. “I wouldn’t characterize them as suspects under the technical term.”

Federal agents have also contacted the maker of a battery found in the debris of the blasts, said Benjamin Mull, a vice president at Tenergy Corporation. One of the firm’s batteries, typically used in remote-controlled hobby cars, was found in the aftermath of the attack, connected to some wires and a piece of plastic.

Thursday evening’s FBI announcement capped a day in which President Obama brought a mixture of reassurance and defiance to an interfaith memorial service in the city’s Cathedral of the Holy Cross. Whoever planted the bombs “picked the wrong city” to attack, he said.

“Every one of us stands with you,” Obama told the crowd. “Boston may be your hometown — but we claim it, too. … For millions of us, what happened on Monday is personal.”

Addressing the still-unknown perpetrators, Obama added, “Yes, we will find you. And yes, you will face justice. We will hold you accountable.” And he looked ahead to next year’s race, predicting that “the world will return to this great American city to run even harder and to cheer even louder for the 118th Boston Marathon. Bet on it.”

Among the crowd of about 2,000 were first lady Michelle Obama; the president’s Republican challenger last November, former Massachusetts Gov. Mitt Romney; the state’s current governor, Deval Patrick; and Boston Mayor Thomas Menino. During an interlude, attendees were soothed by a performance by famed cellist Yo-Yo Ma.

Menino praised each of the three bystanders who were killed in the blasts — Martin Richard, described as a “young boy with a big heart”; Krystle Campbell, whose spirit “brought her to the marathon year after year”; and Lingzu Lu, who “came to the city in search of an education.”

The audience also included scores of police officers and other first responders. Crowds erupted in cheers as the cathedral emptied out at the end of the service, while others sang the national anthem.

Obama later stopped at a high school to thank a group of first responders and volunteers, and the first lady met with patients, families and hospital staff at Boston Children’s Hospital and Brigham and Women’s Hospital, the White House said.

Details of bombs

Investigators say the bombs, which exploded 12 seconds apart, were designed to deliver the most vicious suffering.

One was housed in a pressure cooker hidden inside a backpack, the FBI said. The device also had fragments that may have included nails, BBs and ball bearings, the agency said.

The second bomb was in a metal container, but it was unclear whether it was in a pressure cooker as well, the FBI said.

Photos obtained by CNN show the remains of a pressure cooker found at the scene, along with a shredded black backpack and what appear to be metal pellets or ball bearings. They were sent to the FBI’s national laboratory in Virginia, where technicians will try to reconstruct the devices.

In the past, the U.S. government has warned federal agencies that terrorists could turn pressure cookers into bombs by packing them with explosives and shrapnel and detonating them with blasting caps.

While the clues moved the investigation forward, it is still unclear whether the attack was an act of domestic or foreign terrorism.

Authorities sifted through thousands of pieces of evidence and a mass of digital photos and video clips. They have pleaded for the public’s help in providing additional leads and images.

The two men were photographed walking together near the finish line of the marathon before the explosions that killed three people and wounded about 180.

One of the two men was seen setting down a backpack at the site of the second explosion, said Special Agent Rick DesLauriers, the head of the FBI’s Boston office.

DesLauriers said the men should be considered armed and “extremely dangerous.”

More photos of the suspects can be seen online on fbi.gov.

Any tips regarding the suspects can be called into the FBI at 1-800-CALL-FBI.

The announcement capped a day in which President Barack Obama brought a mixture of reassurance and defiance to an interfaith memorial service in the city’s Cathedral of the Holy Cross. Whoever planted the bombs “picked the wrong city” to attack, he said.

“Every one of us stands with you,” Obama told the crowd. “Boston may be your hometown — but we claim it, too. … For millions of us, what happened on Monday is personal.”

Addressing the still-unknown perpetrators, Obama added, “Yes, we will find you. And yes, you will face justice. We will hold you accountable.” And he looked ahead to next year’s race, predicting that “the world will return to this great American city to run even harder and to cheer even louder for the 118th Boston Marathon. Bet on it.”

Among the crowd of about 2,000 were first lady Michelle Obama; the president’s Republican challenger last November, former Massachusetts Gov. Mitt Romney; the state’s current governor, Deval Patrick; and Boston Mayor Thomas Menino. During an interlude, attendees were soothed by a performance by famed cellist Yo-Yo Ma.

Menino praised each of the three bystanders who were killed in the blasts — Martin Richard, described as a “young boy with a big heart”; Krystle Campbell, whose spirit “brought her to the marathon year after year”; and Lingzu Lu, who “came to the city in search of an education.”

The audience also included scores of police officers and other first responders. Crowds erupted in cheers as the cathedral emptied out at the end of the service, while others sang the national anthem.

Obama later stopped at a high school to thank a group of first responders and volunteers, and the first lady met with patients, families and hospital staff at Boston Children’s Hospital and Brigham and Women’s Hospital, the White House said.

Meanwhile, behind the scenes, investigators were combing through surveillance video dating to at least a week before the bombings to try to identify anyone who walked the finish-line route before the race, said a source who receives regular updates on the investigation.

Working leads

On Wednesday, a law enforcement official who is being regularly briefed on the investigation told CNN’s Susan Candiotti that images showing two men near the marathon finish line were being circulated to state and federal law enforcement agencies. The source described the men as “possible suspects.”

But a source told CNN’s Deb Feyerick on Thursday that those individuals are no longer of high interest to investigators.

The men faced scrutiny and were considered potentially important to the case because one of them had been carrying a black backpack close to one of the bombing sites.

Asked about the images at a congressional hearing Thursday, Homeland Security Secretary Janet Napolitano urged caution.

“There is some video that has raised the question of those that the FBI would like to speak with,” she said. “I wouldn’t characterize them as suspects under the technical term.”

She said the investigation is “proceeding apace.”

Federal authorities were also contacting the maker of a battery found amid the debris of the blasts, said Benjamin Mull, a vice president at Tenergy Corporation. One of the firm’s batteries was found in the aftermath of the attack, connected to some wires and a piece of plastic. The battery is typically used in remote-controlled hobby cars, Mull told CNN’s Joe Johns.

And on Wednesday, two sources with knowledge of the investigation identified a man as a possible suspect in the attack but did not name him.

Seen on a video, the man wore a white baseball cap. One of the sources added that the cap was on backward and the man was also wearing a light-colored hooded sweatshirt and a black jacket.

The reports came after a chaotic day in which some law enforcement sources initially told media outlets that a suspect had been arrested, only to have the FBI and Boston police issue formal denials that any suspect was in custody.

Patrick urged patience to allow investigators space to do their job.

“I wish they had nailed the perpetrator within minutes of this catastrophe, but I understand from experience it’s going to take some time,” he said.

(CNN) — They were standing near the finish line, cheering the runners in the Boston Marathon. It was a beautiful, cool day when two bombs unleashed chaos and killed three people.

boston-victimsFriends of those killed say they are devastated by the senseless deaths.

Here is some of what we know about each of the victims:

Krystle Campbell, 29, Arlington, Massachusetts

“She was the best,” Campbell’s distraught mother, Patty, told reporters on Tuesday. “You couldn’t ask for a better daughter.”

The family is heartbroken and still in shock, Patty Campbell said as she tried to read a statement on the family’s porch.

Everyone loved Krystle, she said.

“She had a heart of gold. She was always smiling,” Patty Campbell said as her son, Billy, clutched her with his right arm.

Krystle’s grandmother said the 29-year-old was a special kind of person who nurtured deep friendships.

“Oh, she was a beautiful girl,” Lillian Campbell told CNN’s Jake Tapper. “She was very happy, outgoing, a hard worker.”

Lillian Campbell said her granddaughter even lived with her for a year and a half and was “great with me.”

Her granddaughter was always willing to help someone in need, she said.

“And she was, she was just beautiful. She was a fun-loving girl,” Campbell said.

Krystle Campbell once worked at Summer Shack, a seafood restaurant in the Boston area that posted a statement on its Facebook page saying she was beloved.

“She was an incredible woman, always full of energy and hard at work, but never too tired to share her love and a smile with everyone,” the post said. “

She was an inspiration to all of us. Please keep her and her family in your thoughts and prayers.”

According to the Boston Globe, Campbell had taken a job with Jimmy’s Steer House in Arlington.

The Globe reported that Campbell often went to the see the marathon runners.

“She’s been doing it since she was a little girl,” Lillian Campbell told the newspaper. “She didn’t miss a marathon, watching it at the finish line.”

Campbell was a 2001 graduate of Medford High School, the town’s mayor, Michael McGlynn, said.

CNN affiliate WHDH reported that the Campbells are longtime residents of Medford.

Martin Richard, 8, Dorchester, Massachusetts

Like many young boys in New England, Martin Richard loved his Boston Red Sox and the Bruins.

“He wore his (Red Sox second baseman) Dustin Pedroia shirt to school last week,” neighbor Bill Forry told CNN’s Anderson Cooper.

Martin was a terrific athlete, too, Forry said, but he was also a very good student who would help others who were having trouble with homework.

“A quiet kid, but a compassionate kid — and somebody who was a leader,” Forry said.

Martin attended the Neighborhood House Charter School.

He “was a bright, energetic young boy who had big dreams and high hopes for his future,” the school said in a statement. “We are heartbroken by this loss.”

His father, William Richard, released a statement asking people to “continue to pray for my family as we remember Martin.”

A neighbor, Jane Sherman, said that the Richard family is a “typical all-American family” and that Martin and his little brother always loved to play in their yard, no matter the weather.

Richard’s mother and sister are recovering from serious injuries sustained in the bombing, the father said.

Lingzu Lu, 23, Shenyang, China

The third person killed in the Boston bombings has been identified as 23-year-old Boston University graduate student Lingzu Lu, from Shenyang, China.

 

Before the bomb that killed her, Lu had worked hard to achieve.

She won an academic scholarship to the Beijing Institute of Technology, where she received accolades for her excellent math skills.

She went on to Boston University to further that passion and was working on a master’s degree in mathematics and statistics, set to graduate in 2015.

Lu was watching the race with two other friends near the finish line.

Another of the three students, also in graduate school at BU, was injured, and is in stable condition at Boston Medical Center. The third student was not harmed.

On Tuesday evening, two university chaplains held a campus vigil for Lu and the other victims.

It was followed by a “town hall-style meeting” for those who needed comfort and counseling.

DORCHESTER, Mass. — Almost a year ago, 8-year-old Martin Richard wrote four simple words on a sign at school.

martin-richard“No more hurting people,” it said.

For the camera, he held up the bright blue sign decorated with hearts framing the word “Peace.”

It’s a photograph that many find difficult to look at Tuesday as they struggle to comprehend the violence that took Martin’s life.

On Monday, the boy and his family were watching the Boston Marathon near the finish line when two bombs exploded just off Copley Square in the heart of the city.

The grade-schooler was killed, authorities said.

Martin’s mother, Denise, and his sister were grievously injured, The Boston Globe reported.

Denise Richard underwent surgery for an injury to her brain, and Martin’s 6-year-old sister lost her leg, CNN affiliate WHDH reported.

As of 1 p.m. ET Tuesday, both were still hospitalized, according to WHDH.

The boy’s father, William Richard, is a community leader in the Ashmont section of Dorchester, according to the Globe.

“My dear son Martin has died from injuries sustained in the attack on Boston,” Richard said in a statement Tuesday.

“My wife and daughter are both recovering from serious injuries. We thank our family and friends, those we know and those we have never met, for their thoughts and prayers. I ask that you continue to pray for my family as we remember Martin. We also ask for your patience and for privacy as we work to simultaneously grieve and recover. Thank you.”

Earlier, CNN affiliate WHDH reported that the father was among the runners, but other reports Tuesday afternoon indicated that William Richard had not participated in the race.

Tuesday morning, people arrived at the Richards’ home in the working-class neighborhood dotted with large New England-style homes.

On the stone steps of the Richards’ blue-gray house, visitors gingerly laid down flowers. Someone had written “peace” at the end of the driveway, according to the Globe.

Neighbor Jane Sherman told CNN that William Richard came home Monday night about 10:30. He seemed extremely upset and didn’t appear to want to talk, she said.

On Tuesday at the Richard home, a 10-year-old girl who went to school with Martin came by with her mother.

“We came here to pay our respects,” the mother told CNN. “My daughter was very sad. He was a very nice boy.”

Martin attended the Neighborhood House Charter School, according to a school official.

Martin made his “peace” sign in May when his school organized a “Peace Walk.”

Holding their homemade signs, kids walked around the city making a big statement with a simple act. In bubble letters, one of his classmates wrote, “No more violence!”

boston-boyIn another photo of Martin — this one apparently marking what was perhaps his first Communion — he is smiling, missing a few teeth, handsome and proud in his white suit.

He holds a colorful Communion banner. On it is a dove that symbolizes the Holy Spirit.

The Richard family was very active in the neighborhood.

“They are beloved by this community,” City Councilor at Large Ayanna Pressley told the Globe. Pressley and other devastated residents gathered at Tavolo Restaurant in Dorchester to mourn.

The family contributes “in many ways,” she said. “That’s why you see this outpouring. It’s surreal; it’s tragic.”

Sherman said that the Richard family is a “typical all-American family” and that Martin and his little brother always loved to play in their yard, no matter the weather.

Neighbor Dan Aguilar told the Boston Globe the same and said he was having a hard time wrapping his mind around the child’s death.

“That little boy will never come home again,” he told the paper. “It’s still unreal. I have no words. I have no words.”

While so much grieving continues, more details are emerging about Monday’s bombings.

No suspects have been identified in the case, which federal authorities are classifying as an act of terrorism. It was not immediately known whether the origin of the bombings was domestic or foreign.

The intelligence community is poring through all threat reporting for any clues, U.S. counterterrorism officials told CNN. That includes any claims made on jihadist websites.

Nothing is being dismissed this early on, the officials said.