A blast that rocked a Southern California medical office building on Tuesday, killing a woman and injuring three others was the result of an explosive package, a report stated. Two officials told The Associated Press the building in Aliso Viejo, about 50 miles south of Los Angeles, was targeted. The woman who died owned a day spa in the building, Undersheriff Don Barnes of the Orange County Sheriff's Department said at a Wednesday news conference. Orange County sheriff's officials said late Tuesday night that they had not found a specific explosive device and were continuing to sift through the debris left from the explosion. Bomb technicians and investigators from the Orange County Sheriff's Department, the FBI and the Bureau of Alcohol, Tobacco, Firearms and Explosives remained at the scene Wednesday, said Orange County Sheriff's Department spokeswoman Carrie Braun.

Source: Fox News May 16, 2018 18:33 UTC