LA explosion: Deadliest day for sheriff's department in 150+ years

Three sheriff's deputies were killed, and one person was hospitalized following an explosion at the Los Angeles County Sheriff's Department Biscailuz Center Training Academy.

The three deputies who were killed were members of the arson explosive detail. The training center has since been evacuated and roads in the area are closed as the investigation continues. The facility serves the sheriff's Special Enforcement Bureau and Arson/Explosives Detail.

The Federal Bureau of Investigation is looking into the post-blast investigation and is being assisted by the ATF, Los Angeles County Sheriff Robert Luna said during a news conference on Friday.

It's unclear what type of explosive materials were being handled by the deputies.

The identities of the deceased were not shared, but Luna said the deputies had a combined 74 years of service between them at 19 years, 22 years and 33 years.

“This is, unfortunately, the largest loss of life for us as the LA County Sheriff's Department since 1857," Los Angeles County Sheriff Robert Luna said.

"I have met with two of the three families thus far. And as you can imagine, those were extremely challenging conversations," Luna said, holding back tears.

LA County Supervisor Kathryn Barger joined LiveNOW's Andrew Craft to discuss the deadly explosion.

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