Nasty weather is being blamed for an unusual pileup involving four tractor-trailers at the Cobequid Pass.    

Police say the accident happened around 6:30 Tuesday evening.

All four trucks were headed east near exit seven when something went wrong.

One person has been taken to hospital with minor injuries.

The road is closed eastbound at exit seven.

Traffic is being re-routed through Wentworth on the old highway four.

Police say traffic is moving in the westbound lane.

Investigators are still sorting out what-happened.