The Los Angeles Sheriff Department (LASD) is still searching for one of four grenades seized during an investigation that led to the deaths of three LASD detectives. Two grenades were found, one exploded, and the fourth remains missing, according to Fox LA. The explosion that killed the three detectives was caused by a grenade, ABC 7 reported, citing an investigation. The grenades were examined at the scene and found to be dormant before being transported back to the station, where they then exploded. Further details regarding the ongoing search for the missing grenade and the circumstances surrounding the incident have not yet been released by the LASD.