Five people were injured, including one critically, after a school bus collided with a horse drawn buggy in South Bruce Thursday.
The collision happened at Concession 10 Elderslie and Sideroad 5 Elderslie in Arran-Elderslie.
The five occupants of the buggy were all injured. One person was taken to hospital by air ambulance with life-threatening injuries.
There were students on the bus but none were reported injured. The driver of the bus was taken to hospital for assessment.
The horse involved was not injured and ran from the scene. It was later found having returned home on its own.
Police say they will release more information as it becomes available.
