An explosion early Friday at a law enforcement training facility in Los Angeles that left three people dead was being investigated as a possible training accident.

An explosion at a Los Angeles County Sheriff's Department training facility Friday left three deputies dead, officials said. The blast was reported just before 7:30 a.m. Pacific and occurred at the Biscailuz Center Training Academy in East L.

An explosion at a Los Angeles County Sheriff's Department training facility on Friday killed three deputies, the department said.