An ambulance has rolled onto its side after a crash on State Highway 83, near the intersection with State Highway 1 north of Oamaru, leaving the road blocked for hours.
St John rural Otago territory manager David Milne said the ambulance crew was on its way to Oamaru when it collided with another vehicle.
The ambulance ended up on its side.
It was not assigned to an incident at the time, nor was it carrying any patients.
The incident occurred abound 1.15pm.
Three ambulance officers were assessed at the scene for minor injuries by two other ambulance crews that responded to the incident.
One was transported to Timaru Hospital in a minor condition.
The damaged ambulance was been taken off the road for repairs.
State Highway 1 reopened at about 7pm.
A Fire and Emergency New Zealand spokesman said two crews from Oamaru and a crew from Weston attended the scene, as well as a crew from Glenavy.