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SUMMIT TOWNSHIP (KDKA) — An accident involving a tractor-trailer and another vehicle shut down a portion of Route 422 in Butler County late Tuesday afternoon.

The crash happened around 5:10 p.m. at the intersection of Route 422 and Carbon Center Road in Summit Township.

(Photo Credit: NewsChopper 2/KDKA)

According to emergency officials, there were reports of at least one person trapped.

A medical helicopter was called to the scene.

Officials shut down the road in order to investigate and clear the wreckage.

Stay with KDKA for the latest on this developing story.