A six vehicle collision on the 400, near Highway 89 Friday (apr26) evening resulted in one fatality.
OPP indicate a witness reported a road rage incident in the southbound lanes between two vehicles that resulted in the initial collision.
One of the vehicles then crossed the centre median, rolled over and was struck by a pick-up truck in the northbound lanes.
The driver of the initial vehicle, was pronounced deceased.
He has been identified as a 21-year-old male from Mississauga.
The driver of the pick-up sustained minor injuries and was taken to hospital.
Police ask anyone with information to contact Aurora OPP.