The Ontario Provincial Police say some eastbound and westbound lanes on Highway 401 were closed in Bowmanville following a multi-vehicle crash early Wednesday.
Police said a tractor-trailer hauling steel and three other passenger vehicles were involved in a crash.
One of the drivers was taken to hospital with minor injuries, police said.
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Two left westbound lanes are closed from Liberty Street to Bowmanville Avenue and one eastbound left lane is closed from Bowmanville Avenue to Liberty Street, police said.