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FRANKLIN TWP., Pa. (KDKA) – The state police in Butler County reported a fatal crash on Prospect Road, just north of English Oak Drive, around 2:30 a.m. on Saturday.

Jason Patrick Williams, 44, of Butler, lost control of his vehicle for unknown reasons and struck a tree, killing his passenger, 33-year-old Brandon Michael Lucas, of Prospect.

fatal butler county crash One Dead In Early Morning Crash In Butler County

(Photo Credit: Austin Ayers/From The Scene TV)

Williams was transported via medical helicopter to Allegheny General Hospital.

The vehicle struck the tree off the northbound lane while traveling south. The investigation is ongoing, according to state police.

Neither Williams nor Lucas were wearing seat belts.