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.

A blast at a Los Angeles County Sheriff's Department training facility killed three members of its arson and explosives unit Friday, marking one of the department's worst losses of life from a single incident,

An explosion at a Los Angeles County Sheriff's Department training facility on Friday killed three deputies, the sheriff said. The explosion took place at the Biscailuz Center Academy Training in East Los Angeles,