Authorities investigating the deadly blast at a Los Angeles County Sheriff’s Department training facility are looking into connections to some explosives collected in Santa Monica.

Three members of the arson and explosives unit of the Los Angeles County Sheriff’s Department were killed Friday in a blast at the department's training facility.

The explosion took place at the Biscailuz Center Academy Training in East Los Angeles, the department said in a statement, without releasing more details.

The Los Angeles Police Department says they are investigating the crash as an intentional act, saying the driver made a U-turn before slamming into the crowd.

The Los Angeles Fire Department is reporting that a vehicle has driven into a crowd of people in East Hollywood, injuring more than 20.

This report produced by Jillian Kitchener.