Sheriff’s officials were warning the public Saturday to be on the lookout for a possibly live grenade — one of two that were found at a Santa Monica apartment building storage unit last week, after the other one detonated the following day in East Los Angeles, killing three sheriff’s detectives.

“Because they were military devices, the LAPD collaborated with the United States Marine Corps’ Camp Pendleton EOD (Explosive Ordnance Disposal) unit to determine whether the items were stable enough to be moved to storage,” police said.

A grenade is missing from the scene of an explosion at a Los Angeles County Sheriff’s Department training facility that killed three members of its arson and explosives unit, authorities said Friday.

A bomb explosion has targeted the home of the president of the Greek association of prison guards. The blast occurred early Saturday morning in Sykies, a suburb of Thessaloniki.