EAST GWILLIMBURY, Ont. -- The Special Investigations Unit is no longer probing a collision in East Gwillimbury north of Toronto that sent three people, including two police officers, to hospital.

The unit, which investigates incidents involving police and civilians, says the injuries sustained in Thursday's crash were not serious enough to meet its criteria.

The crash occurred when the cruiser York Regional Police Sgt. Kelly Bachoo and Const. Andy Pattenden were in collided head-on with a pickup truck driven by a 26-year-old woman.

Bachoo, who was driving the police car, sustained serious but non-life-threatening injuries. Pattenden was taken to hospital but has since been released.

The pickup truck driver suffered minor injuries.

Hours earlier on Thursday, a patient was airlifted to hospital after sustaining life-threatening injuries in a collision in East Gwillimbury near the same intersection where this collision had taken place.