BENSALEM >> An 8-mile stretch of the westbound Pennsylvania Turnpike has been shuttered after a crash involving three tractor-trailers and another vehicle that left at least two people hurt.

Pennsylvania State Police say the crash that occurred around 5:45 a.m. Tuesday also caused more than 100 gallons of diesel fuel to spill down an embankment. All lanes near milepost 351 — between the Bensalem and Willow Grove interchanges — were shut so the spill could be cleaned up and the accident investigated.

Police eventually allowed traffic stuck behind the wreck to go through the scene but the roadway remained closed at the Benslaem Interchange.

The cause of the crash remains under investigation.

Details on the injured people were not immediately available.