This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

A CHP officer was left with life-threatening injuries after being stabbed by a homeless man in San Francisco Tuesday, authorities said.

A CHP officer was stabbed at the Essex Street on-ramp on the San Francisco-Oakland Bay Bridge, shown. (Credit: Google Maps)
A CHP officer was stabbed at the Essex Street on-ramp on the San Francisco-Oakland Bay Bridge, shown. (Credit: Google Maps)

The attack occurred around 10 a.m. on an on-ramp to eastbound Interstate 80 and the San Francisco-Oakland Bay Bridge, California Highway Patrol and San Francisco police officials said.

A seven-year veteran CHP officer was being treated at San Francisco General Hospital, and the man suspected of attacking him was in police custody.

The attack was preceded by a call to CHP about a pedestrian in the roadway on the ramp onto the Bay Bridge at Essex Street, CHP Capt. Christopher Sherry at a news conference.

No pedestrian on the ramp could be found, but a two-person CHP unit arrived and began talking to a man who was near tents that were set up along the roadway.

The man attacked one of the officers, and they began to struggle, and then the man ran off. The other officer chased the man and then realized his partner wasn’t following; he turned and saw the first officer had significant injuries, Sherry said.

He ran back to help his partner. Police and paramedics were called, and a perimeter was set up to search for the attacker.

The injured officer, whose identity was not being released, was stabbed in the neck and upper torso, Sherry said.

“This type of incident just really shocks us,” Sherry said. “It’s a very serious, violent attack, and also it’s very traumatic for officers on scene who are there with their friend.”

The officer had significant, life-threatening injuries but was stable, the captain said.

Meanwhile, responding police officers found the suspect at a bank on Fourth Street and took him into custody, San Francisco Police Department spokesman Officer Albie Esparza said. A knife was found at that location, Esparza said.

Both the uninjured partner CHP officer and witnesses to the attack gave descriptions of the attacker that led to his arrest, Sherry said. He described the individual as homeless.

The identity of the adult male who was arrested was not being immediately released. He was likely to be charged with attempted murder and assault on a police officer, at a minimum, Esparza said.

The stabbing comes five days before the Super Bowl is set to take place at Levi’s Stadium in Santa Clara, near San Jose. A “Super Bowl City” entertainment area and “fan village” has been set up in San Francisco leading up to the Sunday game.

The center of Super Bowl City is about a half-mile from the stabbing location.