One person was airlifted by STARS and three others were taken to hospital after a single vehicle rollover north of Ponoka near Menaik Road July 10.
The vehicle went off the highway and onto the shoulder.
All four occupants of the vehicle were transported to the hospital, including one who was airlifted to an Edmonton hospital.
The Ponoka RCMP Traffic Unit were dispatched the scene at 11:37 a.m. Southbound traffic was reduced to one lane for several hours while RCMP conducted their investigation and the collision debris was removed.