The training facility is to house the police's bomb group, according to American media, among other things. It is unclear whether the explosion occurred in connection with an exercise, but according to sources to the Los Angeles Times, the explosion is said to have occurred in connection with the bomb group moving explosives on the site. According to several American media, it is said to be an accident.
On X, US Justice Minister Pam Bondi writes that it appears to be a "terrible event that killed at least three at a training facility for law enforcement".
US Secretary for Homeland Security Kristi Noem writes on social media that her department is working with both federal and state law enforcement agencies to investigate the incident.
California Governor Gavin Newsom has been notified of the incident and is following the development closely, says his staff.