DES MOINES, Iowa (AP) — Police say three people were injured when a department prisoner transport van collided with a car at a Des Moines intersection.

Police say the crash happened just before 7:30 a.m. Wednesday at an I-235 ramp intersection. Police say a car driven by a 19-year-old Urbandale man collided with the van, which caused it to roll.

Officers Jeffrey Morton, who was driving the van, Officer Alex Andersen and a 24-year-old prisoner were treated for minor injuries at a nearby hospital. The driver of the car declined medical treatment.

Police Sgt. Paul Parizek says investigators plan to review the police van's dash video to determine which vehicle ran a red light and caused the crash.