AUGUSTA — A city man was killed today when the tractor he was riding overturned on a hill.

The accident occurred shortly after 1:30 p.m. outside the man’s home on West River Road.

Police withheld his name until his family could be notified.

The 64-year-old man was using the tractor, a large John Deere with a bucket loader, to mow his lawn, said Sgt. Christopher Massey, of the Augusta police. The tractor overturned on a steep hill and rolled roughly 30 feet down the embankment.

“He was pinned under the tractor,” Massey said.

The victim was pronounced dead at the scene, Massey said.

The tractor’s roll bar was not upright after the crash. Massey said he was unsure whether the man was using the tractor with the bar in the lowered position or the bar was bent during the accident.

“He was just out here mowing his lawn,” Massey said. “He does it often.”