HOLLAND TOWNSHIP - (AP) - Authorities believe the pilot of a single-engine plane was trying to reach an airport in dense fog and rain when the aircraft crashed on a wooded hilltop near the Delaware River in New Jersey.

The pilot, 71-year-old Joseph Borin of Readington Township, died in the crash. He was the only person on board.

Hunterdon County Prosecutor Anthony Kearns III says people reported hearing what sounded like a plane crash around 5 p.m. Wednesday.

Authorities scoured the New Jersey and Pennsylvania sides of the river before a search team reached the debris in a remote and rugged part of Holland Township five hours later.

Authorities believe the pilot was trying to reach Alexandria Airport.

It's not known what caused the crash.

Anyone with information pertaining to this investigation is encouraged to contact the Hunterdon County Prosecutor’s Office at (908) 788-1129.