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One killed, three injured when an explosion occurred at a medical building in California

A medical building in Aliso Viejo, Orange Conty, California, on Tuesday, was the scene for a deadly explosion which killed one woman and critically injured three others.

The explosion blew out walls and windows, heavily damaging the first floor corner of the two-story building and hurling debris outside. The explosion shook the two-story building so forcefully that employees at neighboring businesses thought it was an earthquake. Rows of emergency vehicles blocked the streets as a helicopter hovered overhead. Children at a daycare across the street were evacuated out of precaution. Authorities called the explosion suspicious but did not reveal many further details. "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 Department Commander Dave Sawyer said in a news conference Tuesday night.

scene-of-explosion-California
Emergency at the scene of explosion

However it didn't appear to be a gas leak and the incident is being investigated as a criminal act. The identity of the female victim who was killed, has yet to be released. Nothing indicates there were any threats made before the blast. There is no specific person that authorities are searching for right now. The FBI, the Department of Homeland Security and the Bureau of Alcohol, Tobacco, Firearms and Explosives  assist the investigation. Several dozen employees work in the medical complex.

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