The device that exploded last week at a LASD facility and killed three detectives was a grenade, ABC News sources confirmed.

Three deputies with the Los Angeles County Sheriff’s Department were killed Friday morning after an explosion occurred at a department facility in East Los Angeles, marking the agency’s ...

1 of 3 | At least three Los Angeles County Sheriff's Department deputies (pictured in June) were killed during an explosion at a department facility Friday morning.

At least three Los Angeles County Sheriff's Department deputies (pictured in June) were killed during an explosion at a department facility Friday morning. File Photo by Jim Ruymen July 18 (UPI ...

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 ...

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, ...

An explosion at a Los Angeles County Sheriff’s Department training facility killed three veteran members assigned to the agency’s arson and explosives detail Friday morning – a tragedy that ...

An explosion that killed three Los Angeles County Sheriff's deputies occurred one day after they responded to a call involving explosives at a Santa Monica complex.

The device that exploded last week at a LASD facility and killed three detectives was a grenade, ABC News sources confirmed.

Three sheriff's deputies were killed following an explosion at a training facility in East Los Angeles Friday morning.

Three detectives in an elite arson and explosives unit were killed when an explosion erupted at a Los Angeles County Sheriff’s Department training facility in East LA on Friday morning, July 18.