Police are investigating a two-car crash at One Tree Hill this morning.
Just before 11am on Sunday, February 25, two cars collided on the Gawler to One Tree Hill Road, about one kilometre north of the Kersbrook Road roundabout.
A 57-year-old woman, the driver of the Ford Sedan, and her two passengers – a 64-year-old woman and a 38-year-old man – were taken to the Royal Adelaide Hospital.
A 26-year-old woman, who was driving a Holden, was taken to the Lyell McEwin hospital.
All injuries were non-life threatening.
The road was closed for several hours while the scene was examined.