A military-style grenade caused last week’s accidental explosion that killed three Los Angeles sheriff’s deputies at a training facility, the LA County Sheriff’s Department said on Monday.

The investigation into the deaths of three L.A. County deputies, all killed by an explosion of military-style grenades ...

The investigation into an explosion that killed three Los Angeles County sheriff’s deputies in East Los Angeles turned to Marina del Rey Monday, where investigators served a search warrant at a boat ...

Authorities are looking into whether grenades recovered from a Santa Monica apartment complex caused an explosion last week ...