A 15-year-old boy was airlifted to hospital with serious injuries and his 56-year-old father was transported via ground ambulance with minor injuries after a cargo van rollover on Highway 401 early Tuesday morning.

The accident happened in the eastbound lanes of Hwy. 401 west of Winston Churchill Boulevard at around 4:10 a.m.

Police say the boy was initially trapped but was freed after about an hour.

The cargo van was loaded with food products at the time of the crash and a number of materials did spill onto the road.

The cause of the collision has not yet been determined but police say they are looking at mechanical failure as a possibility.

"The driver lost control for an unknown reason, maybe a mechanical issue like a tire possibly," OPP Sgt. Kerry Schmidt told CP24 at the scene.

All eastbound lanes on Highway 401 were closed at Trafalgar Road as police investigated, however one lane reopened at around 7 a.m. and the remaining lanes reopned at around 7:40 a.m.

According to Schmidt, the quick turnaround was attributed to the use of an aerial vehicle that will be used to help police reopen roads more quickly during the Pan American Games.

"We had an aerial vehicle that was up taking photographs and it really assisted us in getting all the information and evidence that we wanted to collect in a very efficient manner. It sped things up," Schmidt told CP24.

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