A serious collision on Highway 12 south of Beaverton, Ont., involving a dump truck and multiple passenger vehicles sent a number of people to hospital Thursday afternoon.
Ontario Provincial Police posted about the crash in a video just after 2 p.m.
The crash has led to all lanes on Highway 12 being closed between Beaverton and Highway 48.
Detours are in place, and people are advised to avoid the area.
Police say four people were taken to a hospital, two with serious injuries.
One of the victims was taken to hospital by air ambulance.
More details will be provided as they become available.