FLAGSTAFF, Ariz. (AP) — Authorities say four people have been killed and another person injured after two cars collided south of Flagstaff.

Arizona Department of Public Safety officials say the fatal crash occurred around 4:15 a.m. Friday on Interstate 17 near Munds Park.

Four people were declared dead at the scene while a fifth person was taken to a Flagstaff hospital for treatment.

The names, ages and hometowns of the five people weren't immediately released.

DPS officials say the cause of the crash hasn't been determined yet.