A passenger vehicle and commercial vehicle had collided, causing the passenger vehicle to roll.
One person was extricated from the passenger vehicle and transported to hospital where they were pronounced deceased.
There were no other injuries reported.
The investigation is ongoing and members of the West Region OPP Traffic Incident Management and Enforecement Team are assisting.
The area surrounding Line 29 and Road 111 remains closed for the protection of emergency responders and to facilitate the investigation.
It will remain closed for a number of hours. Anyone with information on the incident are asked to contact the OPP or Crime Stoppers.