Ontario Provincial Police say the driver of a vehicle that rolled over on Highway 401 in Mississauga leaving a man with critical injuries fled the scene of the crash.
Peel paramedics said emergency crews were called to the collision near Hurontario Street at 1:19 a.m. on Monday.
OPP said on Twitter that the crash happened in the westbound lanes and left the 20-year-old passenger with life-threatening injuries.
Paramedics said the victim was a man and added that he was taken to a local hospital.
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Police said the driver was seen fleeing on foot and officers are now asking that they turn themselves in.
There is no word on what led to the incident.