A woman is in a serious condition following a police car chase down Centaurus Road in Christchurch.
Police said about five minutes after they stopped chasing the 33-year-old woman, the Ford Explorer she was driving careened off the road and crashed down a steep incline.
They said they started pursuing the vehicle following calls shortly before 5.45pm from people complaining about erratic driving and vehicles being damaged in a residential street in Hornby.
Police are appealing for witnesses as investigations into the crash continue.