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

Federal agents are investigating, but authorities describe it as "an isolated incident" with no further threat to the public.

An explosion at a Los Angeles County Sheriff's Department training facility Friday left three deputies dead, officials said. The blast, which was reported just before 7:30 a.m. Pacific, occurred at the Biscailuz Center Training Academy in East L.A., which opened in 2017. The deputies who were killed have not yet been identified.