Victims of LA County sheriff training facility explosion ID'd as 3 deputies assigned to elite unit | 19 July 2025 | Three Los Angeles County Sheriff's deputies were killed in a blast at a compound that houses the agency's arson and explosive unit on Friday morning. The explosion at the Biscailuz Center Academy Training facility in East Los Angeles resulted in the department's worst loss of life in a single event since 1857. The officers were identified as Detective Joshua Kelley-Eklund, Detective Victor Lemus and Detective William Osborn, all of whom were assigned to the Special Enforcement Bureau's Arson Explosives Detail. The fallen members -- whose elite unit responds to 1,000 calls yearly -- were longtime veterans who had been on the job for 19, 22 and 33 years, respectively. It’s unclear what sparked the deadly blast, though investigators are preliminarily looking at a possible training accident, a person briefed on the matter told the Associated Press.