A grenade is missing from the scene of an explosion that killed three Los Angeles County sheriff’s deputies, authorities said Friday. The July 18 blast at a sheriff’s department training facility killed three experienced deputies on the arson and explosives team.

A grenade has not been found and remains missing after last week's explosion that killed three L.A. County sheriff's detectives, the sheriff says.

Authorities are searching for a missing “military-style” grenade linked to an explosion that killed three Los Angeles sheriff’s deputies last week.