New Jersey state police say a Pennsylvania man found dead after the tractor-trailer he was driving overturned on Interstate 78 last week died from a self-inflicted gunshot wound.

Sgt. Brian Polite tells The Express-Times that a preliminary investigation shows 42-year-old Andre Epps of Harrisburg apparently shot himself early Saturday while he drove eastbound on Route 78 in Union Township.

Epps, who was traveling by himself, was trapped inside the truck after the crash occurred near milemarker 12.6. He was pronounced dead at the scene a short time later.

Authorities say no other vehicles were involved in the crash.

Polite says the investigation is ongoing.

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