The shooting occurred at Cook's Corner in Trabuco Canyon, Orange County, shortly after 7 p.m.
Orange County Sheriff's Department deputies responded to the scene within two minutes and exchanged gunfire with the shooter. The shooter was killed, and three other people were pronounced dead at the scene.
Six other people were injured in the shooting, five of whom were taken to the hospital with gunshot wounds. Two of the injured are in critical condition.
The shooter has not been identified, and the motive for the shooting is under investigation. (ILKHA)