The province's Special Investigations Unit has been called in after a three-vehicle collision northwest of Toronto that left a woman seriously injured.
The police watchdog agency says the incident took place at about 12:30 a.m. Monday as Peel Regional Police were trying to investigate a van in Brampton (in the Williams Parkway area).
It's alleged that the van fled from the area but was then involved in a collision with two other vehicles at an intersection (Williams Parkway and Highway 10).
A 49-year-old woman, who was the driver of one of those vehicles, suffered serious injuries and was transported to Brampton Civic Hospital and then to Sunnybrook Hospital for treatment.
The SIU says it has assigned five investigators and three forensic investigators and a collision reconstructionist to probe the circumstances of the incident.
The SIU is an arm's-length agency that investigates cases involving police where there has been death, serious injury or allegations of sexual assault.
This content appears as provided to The Globe by the originating wire service. It has not been edited by Globe staff.