A South Dayton man died while logging Thursday when a rotten tree fell behind him for an unknown reason, Chautauqua County sheriff’s officials said.

The incident occurred about 2:30 p.m. in a wooded area along Route 83 in the Town of Villenova.

Harvey J. Detweiler, 36, of Cottage Road, was cutting down a pine tree when he was struck by the rotten tree, and was pronounced dead at the scene, sheriff’s officials said.