An upstate New York farmer died Thursday when he was trampled by a bull while working at a farm, police said.

Roy C. Bell was moving cattle at the farm on Simmons Road in Covington, less than an hour south of Rochester, when he was injured by one-year-old bull sometime before noon.

The 72-year-old was discovered unconscious around 11:40 a.m. by a family member who unsuccessfully tried to perform life-saving measures, New York State Police said.

The victim was pronounced dead shortly thereafter.