Authorities say a 91-year-old man who was attempting to cut down a tree at his Sussex County home was killed when it fell on him.

The accident in Vernon was reported around 6:35 p.m. Tuesday. It wasn’t immediately clear what caused the accident or if the man was working alone at the time.

The victim’s name was not released pending notification of his family.

No other injuries were reported in the accident, which remains under investigation.