The Yuma County Sheriff's Office is investigating an accident that occurred at about 6:45 a.m. Wednesday.

Two vehicles collided on Avenue G and County 13th Street. According to YCSO deputies , a four-door sedan was northbound on Avenue G and a Jeep Cherokee was southbound on the same road. The driver of the sedan attempted to pass another vehicle and collided head on with the Jeep. The driver of the Jeep and the driver of the sedan as well as a passenger in the car were transported to Yuma Regional Medical Center for treatment and then flown to a Phoenix area hospital. A second passenger in the sedan was pronounced dead at the scene. Alcohol does not appear to be a factor in the collision.