A man pointed a rifle at emergency personnel as they arrived at the scene of a house fire in Buena Park early Sunday evening, prompting a massive deployment of law enforcement officers from multiple agencies, police said.
The man fled after the incident and was still being sought hours later.
The Orange County Fire Authority responded about 5:30 p.m. to a report of a garage fire at a single-family home in the 7700 block of 11th street, the agency's Capt. Paul Holaday said.
Multiple explosions and burn victims were initially reported, according to a news release from the Buena Park Police Department, whose officers were also dispatched to the scene.
A SWAT team was summoned after the individual was seen aiming the rifle at the first responders, the statement said. Officers from neighboring agencies began arriving to assist, including the police departments of Huntington Beach, La Habra and Anaheim, and the sheriff's departments of Orange and Los Angeles counties.
Buena Park police said the law-enforcement activity was occurring near the intersection of Beach Boulevard and Orangethorpe Avenue, less than half a mile south of the fire.
A man suffered second- and third-degree burns on 30 percent of his body, and was transported to UCI Medical Center in serious condition, according to the Fire Authority.
A witness's video showed flames and a plume of thick black smoke emanating from the residence. It was unclear what caused the fire.
"The man who lived there was not a very nice man," said a neighbor who declined to be identified.
"I'm really startled right now," the woman added, her voice breaking with emotion. "I can't believe this is happening in our community, when there's a police station literally across the other side." Buena Park police headquarters is located less than two blocks from the burned house.
A police perimeter remained in place late Sunday evening, as SWAT officers surrounded a nearby residence where the gunman was believed to be barricaded.
Authorities advised local residents to remain locked inside their homes, and those outside of the area to stay away.