The Los Angeles County Sheriff's Department (LASD) has identified the three detectives who were killed in an explosion at a training facility on July 18 as Joshua Kelley-Eklund, Victor Lemus and William Osborn.

Three Los Angeles County Sheriff’s Department 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 since 1857.

Officers spent hours searching a Santa Monica apartment building where the device that exploded and killed three deputies may have originally come from.

The DOJ says it wants info on undocumented immigrants with criminal records. LA County Sheriff Robert Luna says his department doesn't have info on inmates' citizenship status.

The Los Angeles County Sheriff’s Department is in mourning Saturday for three detectives killed in an explosion at a training facility in East Los Angeles in the agency’s deadliest day since 1857. Detectives Joshua Kelley-Eklund,

The department said it appears the detectives were moving explosives on a cart in the training center's parking lot when the blast occurred.