Ontario Provincial Police said one person suffered serious injuries after a vehicle became pinned beneath a large piece of farm machinery in Port Perry on Thursday afternoon.
Sgt. Kerry Schmidt reported that officers were called to Highway 7A at Simcoe Street around 3:30 p.m.
A blue Audi sedan appeared to be pinned directly beneath the farmer tractor, according to photos shared by police.
OPP said a second person was also taken to hospital with injuries following the collision.
Police are looking to speak with a driver of a white pickup truck who was at the intersection at the time of the incident and likely witnessed the collision.
It was not yet known when roads would reopen in the area.