One week after the explosion at a Los Angeles sheriff's facility that killed three deputies, authorities say they're still ...

The federal Bureau of Alcohol, Tobacco Firearms and Explosives has taken over the investigation to find the grenade.

A veteran investigator, a respected mentor and a skilled technician — the three arson investigators killed in an explosion at ...

Federal, county and local law enforcement officers were continuing Wednesday to search a group of storage units in Marina del Rey for evidence related to the explosion that killed three Los Angeles ...