DESERT CENTER, Calif. (AP) — Three people have been killed and another injured in the crash of two big-rigs and a passenger vehicle on a Southern California desert highway.

Cal Fire says the crash occurred before dawn Thursday on the eastbound side of Interstate 10 in the Riverside County community of Desert Center, about 175 miles (281 kilometers) east of Los Angeles.

The first engine company on the scene reported one semi-truck well involved in fire.

Three people died at the scene and a victim with moderate injuries was flown by helicopter to a hospital.