At least 3 deputies killed in apparent explosion at Los Angeles Sheriff's Department facility

LOS ANGELES -- A deadly explosion at a Los Angeles County Sheriff's Department training facility in the City Terrace area of East L.A. left three deputies dead Friday.

The incident, which is believed to be an accident at this time, was reported just after 7:30 a.m. at the Biscailuz Training Facility in East Los Angeles, LASD said. It is believed to be the compound that houses the sheriff's department's special enforcement units and bomb squad.

It appears the sheriff's enforcement bureau personnel were handling some kind of explosives when there was a blast, according to preliminary information from sources. Three deputies were killed in the incident.

MORE: Dispatch audio sheds light on moments after deadly explosion

The emergency dispatch audio sheds light on the moments immediately following the explosion that killed three L.A. County sheriff's deputies at a training facility on Friday.

The Los Angeles County Fire Department responded to the scene. It's unclear if there were any other injuries.

Sheriff Robert Luna is expected to provide additional details about the incident at a 11:45 a.m. Friday. ABC7 will livestream the sheriff's news conference in the player above.

Los Angeles Mayor Karen Bass confirmed that the LAPD bomb squad has responded to the scene and is assisting with the incident, along with LASD homicide detectives.

Gov. Gavin Newsom's Office said the governor has been briefed on the apparent explosion and that the Governor's Office of Emergency Services is in contact with LASD while closely monitoring the situation.

L.A. County Supervisor Kathryn Barger issued the following statement regarding the deadly incident:

"I am heartbroken to hear of the terrible tragedy that has unfolded today at an L.A. County Sheriff's Department facility. I am closely tracking the situation as we learn more about what occurred and the condition of those affected. My heart is heavy, and my thoughts are with the brave men and women of the Sheriff's Department during this difficult time. We stand with them and their families as they navigate the hours and days ahead."

At least three people were killed following an apparent explosion at a Los Angeles County Sheriff's Department training facility in Monterey Park.

L.A. County Supervisor Hilda Solis also issued a statement:

"I am deeply saddened by the tragic incident that occurred this morning at the Los Angeles County Sheriff's Department Biscailuz Training Academy in East Los Angeles. My heart goes out to the families, friends, and colleagues of the three individuals who lost their lives in what appears to have been a devastating explosion. I am in contact with Sheriff Robert Luna and closely monitoring the situation as we await further details. My thoughts are with all those grieving and the first responders who are on the scene."

In her statement, L.A. County Supervisor Janice Hahn said:

"This is an extraordinarily painful day for our Sheriff's Department and for LA County. My prayers are with the families of the deputies and their colleagues in law enforcement who are reeling from this tragedy. I am offering my full support to our Sheriff Robert Luna and his department as they not only work to support our deputies but to investigate what went so wrong. We need to get to the bottom of what happened and make sure that it never happens again."

The FBI and ATF responded to the scene, according to a post from U.S. Attorney General Pam Bondi posted on X.

"Our federal agents are at the scene and we are working to learn more. Please pray for the families of the sheriff's deputies killed," the post said.

ABC7's David Ono has previously trained with Los Angeles County Sheriff's Department deputies at the site where a deadly explosion occurred. He described the facility in the aftermath of the catastrophic blast.

This is a developing story. This article will continue to be updated as more information becomes available.