The Westbound Highway 401 through Norwich Township has been re-opened following a serious collision around noon yesterday.
Only minor injuries were reported at the scene.
A pick-up truck was switching lanes on the highway when it swerved, causing another vehicle to lose control according to reports from the Oxford County OPP.
Police say the collision caused a chain reaction and they are actively looking for the driver of the pick-up truck which continued driving following the collision.
The truck is described as a black or brown Chevrolet Silverado or Colorado, it was also carrying a black ATV.