1 killed, 2 injured in Aliso Viejo office building explosion

Street closures due to an explosion in Aliso Viejo

Street closures due to an explosion in Aliso Viejo

The official said the information was based on a preliminary investigation.

The Bureau of Alcohol, Tobacco, Firearms and Explosives responded to the incident. No children were injured, officials said.

Mary McWilliams told the Orange County Register that she arrived for an appointment to find smoke surrounding the area and vehicle alarms going off.

A third person suffered smoke inhalation, fire officials said.

Officials originally believed the explosion was caused by a vehicle crashing into the building, but Orange County Sheriff's Department spokeswoman Carrie Braun said no auto was involved and the department was investigating how the explosion occurred.

"We have not found any type of specific device inside of the building right now that would tell us or lead us to exactly what the device was - if there was a device", Orange County sheriff's Cmdr. Dave Sawyer said Tuesday night that the size of the explosion makes it suspicious.

There are unconfirmed reports of explosive devices on the scene of the blast in Orange County.

Chief Fennesy noted the building where the explosion occurred was being renovated.


Mary McWilliams tells the Orange County Register that she arrived for an appointment Tuesday in Aliso Viejo to find smoke surrounding the area and auto alarms going off. McWilliams says one woman had skin peeling on her arm.

". They weren't on fire, they were helping each other across the street, walking very slowly and a lot of shock, shaking, just full of ash all over their face, eyes bloodshot, just blood all over", the woman said.

The injured were taken to a hospital and there's no immediate word on their conditions.

Bomb squad investigators and FBI agents are looking into what caused the blast but authorities said there was no lingering threat, according to NBC.

He explained that authorities were being extra cautious because they "don't see explosions in commercial buildings" often.

"The survivors' injuries were consistent with an explosion, but not necessarily consistent with a bomb".

The explosion happened in the first floor of a two-story office building, said Capt. No children were injured, officials said. They were being reunited with parents at a nearby store parking lot.

It wasn't immediately clear how many people were hurt, but authorities said there were at least two patients transported. Outside the building, a massive contingent of sheriff's deputies and fire crews amassed, joined by federal agencies that were summoned to assist with the probe. The cause of the blast was being investigated.

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