1 Killed in Explosion at Office Building in California

One woman was killed as well as three some other people were injured when an explosion ripped through the first floor of a California office building on Tuesday afternoon, forcing evacuations as well as prompting a large response via emergency workers.

Carrie Braun, a spokeswoman for the Orange County Sheriff’s Department, called the blast suspicious although would certainly not comment further about what specifically had caused the idea.

The authorities, she said late Tuesday, were “still trying to determine whether the explosion was accidental or intentional.”

Just after 1 p.m. Tuesday, firefighters were called to the two-story office building at 11 Mareblu in Aliso Viejo, Calif., a city about 50 miles south of Los Angeles, said Capt. Tony Bommarito of the Orange County Fire Authority.

Pictures via the scene show of which the blast, on the building’s first floor, blew out some brick walls as well as windows, spewing debris across the roadway as well as onto a nearby parking lot.

Firefighters put out a little fire as well as found one woman dead inside the building, the authorities said. They had not released her name as of late Tuesday night.

Of the three people who were injured, Ms. Braun said, two suffered “significant” injuries while the third complained of smoke inhalation. All were taken to a hospital, she added. Mr. Bommarito said all three were likely to survive.

At a news conference late Tuesday, Paul D. Delacourt, the assistant director in charge of the F.B.I.’s Los Angeles field office, said his agency was working with the sheriff’s department as well as the Bureau of Alcohol, Tobacco, Firearms as well as Explosives to investigate the blast.

The explosion, in a normally tranquil South Orange County city, prompted the evacuation of nearby businesses as well as a school filled with children, officials said.