UNITY, Pa. -- State Police in Greensburg are investigating an accident that occurred just before 11 p.m. Saturday.

The driver of a Dodge pick-up truck was seriously injured when he crashed into an embankment on White School Road.

Donald C. Cullen, 52, of Mt. Pleasant was flown to UPMC Presbyterian in critical condition.

Cullen was not wearing a seatbelt. Police are pointing to alcohol and speeding as possible causes of the accident.