ORANGE COUNTY, Calif. (KTLA) -- At least sixteen people were injured after an explosion at an FBI training facility on Wednesday, authorities said.

The incident happened at the Jerry Crowe Regional Tactical Training Facility in Irvine shortly before 1 p.m., according to the Orange County Sheriff’s Department (OCSD).

The department's SWAT team was conducting a joint exercise with a bomb squad when the explosion occurred, authorities said.

Sixteen SWAT team members were injured by the blast, according to the OCSD. Ambulances transported fifteen people to a hospital for treatment,........

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