The investigation aims to determine the cause of the explosion, which was classified as an "isolated incident" by Sheriff Luna. The deceased officers were known to be part of the arson explosives detail and were reportedly working on rendering safe a grenade found in a Santa Monica garage prior to the blast. The FBI and the Bureau of Alcohol, Tobacco, Firearms and Explosives are collaborating with the local authorities to probe the circumstances surrounding this incident. Governor Gavin Newsom and Chief of the Los Angeles County Board of Supervisors Kathryn Barger have expressed their sorrow and offered state assistance amidst this tragic event.

With the area surrounding the facility now sealed off, it marks the Los Angeles County Sheriff's Department's greatest loss of life in a single incident in its long history, which dates back to 1857. As more details emerge, the community is left in mourning, reflecting on the bravery of the officers who dedicated their lives to public service.