How many deadly devices are out there? That's the grim question after three sheriff's deputies were killed in what's believed ...

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

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 ...

Investigators say they are following leads to determine the origin of the grenades that were discovered inside a Santa Monica ...