The OPP closed the eastbound lanes of Hwy. 401 in Whitby after a woman was ejected from a moving vehicle.
The incident occurred around 3 p.m., Sunday.
The OPP closed the eastbound lanes at Brock Street.
The woman was rushed to an Oshawa hospital with life-threatening injuries.
Police are still investigating whether the woman was ejected or thrown from the vehicle.
Reports suggest police have located an SUV that may have been involved in the incident.
