Provincial police are looking for witnesses to a five-vehicle crash outside of Markdale that sent two people to hospital by air ambulance.
The collision happened on Highway 10 between Uplands Drive and Road 110 around 9:40 a.m. on Wednesday.
According to Grey Bruce OPP, the investigation found a dump truck collided with several passenger vehicles.
The truck driver was taken to the hospital with minor injuries, while two other drivers were airlifted to hospital with serious, non-life-threatening injuries.
The crash kept the road closed for several hours while investigators were on scene and debris was cleared. It was reopened shortly after 7 p.m.
"No charges have been laid at this time; however, the investigation remains ongoing," police said in a statement on Thursday morning.
Anyone who saw the crash or has security or dash-camera footage from the area around the time of the crash is asked to call police at 1-888-310-1122.
