Ontario's Special Investigations Unit are looking into a collision in Bradford.
South Simcoe Police were called to Tanger Outlet Mall in Cookstown around 5:30 Tuesday afternoon about a suspicious vehicle.
Officers followed the vehicle as it left the parking lot, going east on Highway 89, south on 10 Sideroad, then west on Highway 88.
It was in an area of Highway 88 east of Highway 400 where the vehicle collided with a pick up truck.
Three people in the vehicle and two in the pick up truck were all taken to hospital with serious injuries.
The SIU is asking anyone who may have witnessed this crash to contact them at 1-800-787-8529.
