One of two grenades taken to a Los Angeles County Sheriff’s Department facility detonated last week and killed three detectives, but the second grenade remains unaccounted for, the sheriff said Friday.

Former Los Angeles County Sheriff Alex Villanueva outlines his vision to restore the city's law and order on 'Fox & Friends First.'

Former Los Angeles County Sheriff Alex Villanueva is looking to get his old job back after announcing his bid for reelection Tuesday evening. In a video posted on X, he launched his campaign while standing in front of a banner that read, "Alex Villanueva, Help is on the Way."

The device that exploded last week at a LASD facility and killed three detectives was a grenade, ABC News sources confirmed.

In October 2017, the K-9 teams responded to the Route 91 Harvest Festival shooting in Las Vegas, Nevada, where 60 people were killed and 413 people were injured. Most of those impacted were California residents. For 10 days, LADA’s K-9 Unit provided emotional support to victims, family members, nurses and other first responders.

Numerous outlets are reporting that at least three people were killed in an apparent explosion at a Los Angeles County Sheriff's Department facility.

Three Los Angeles County Sheriff’s deputies were killed Friday in an explosion at a training facility in East Los Angeles, a tragedy Sheriff Robert Luna called his agency’s deadliest day in more than 150 years.

A former top official with the Los Angeles County Sheriff’s Department has accused Sheriff Alex Villanueva of attempting to cover up an alleged excessive force incident and then lying about ...

F or the third-straight day, investigations into last week's deadly explosion at a Los Angeles County Sheriff's Department training facility were centered in Marina del Rey on Wednesday.