A single vehicle had left the roadway striking a tree. Firefighters had to extricate the driver who was taken to a trauma centre by Ornge Air Ambulance with life threatening injuries.
One person, a 28 year old of Brockton, was pronounced deceased at the scene.
The road was closed for most of the night while the West Region OPP Traffic Incident Management and Enforcement Team attended and assisted with the investigation.
THe South Bruce OPP is requesting anyone with information to call 1-888-310-1122. If you wish to remain anonymous you can call Crime Stoppers at 1-800-222-TIPS.