Three veteran Los Angeles County Sheriff’s Department members assigned to the agency’s arson and explosives detail were killed Friday morning by an explosion at a department training facility, according to Sheriff Robert Luna.

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.

A deadly explosion at a Los Angeles County Sheriff's Department training facility in the City Terrace area of East L.A. left three deputies dead Friday.

The SEB is made up of dozens of highly trained, highly specialized deputies who do everything from SWAT standoffs to risky rescues of people in peril in remote areas.

The explosion at a Los Angeles County Sheriff’s Department training facility was the deadliest incident in the history of the law enforcement agency after it killed three seasoned deputies, Sheriff Robert Luna said Friday.

Los Angeles County Sheriff Robert Luna said the FBI is investigating the cause of an explosion that killed three Arson/Explosives officers at a LASD training facility. Luna added that the explosion was an "isolated" incident and the public is not in danger.

These alleged actions, as detailed in federal court documents, are deeply disturbing,” according to the Los Angeles County Sheriff’s Department.

The former sheriff's deputies intimidated the competition for the 25-year-old Iza, the founder of trading platform Zork who is better known as 'The Godfather'