ST. PAUL  (AP) - The Minnesota State Patrol says a suspected drunken driver killed one man and injured another who had come to the aid of a driver whose car crashed on the interstate in St. Paul.

The patrol says crash happened just before 11 p.m. Sunday when a pickup truck merging onto Interstate 94 struck a car, causing its driver to lose control of the vehicle and roll over. The patrol says the pickup driver and a witness attempted to help the driver of the car. That's when a minivan hit the car and the two men. The pickup truck driver, a 21-year-old Sault Sainte Marie, Mich., died at the scene. The witness, a 37-year-old Minneapolis man, was critically injured. The driver of the car, a 22-year-old St. Paul man, also suffered critical injuries.