A Winder man discovered a surprising relic buried in his yard on Tuesday -- a bomb from World War I.

A resident of a home on Creekwood Road was working in his yard when he found the contraption at 3:32 p.m. and called police to report a suspicious device. The round metal cylinder had four fins attached to it, according to a press release issued by Sgt. Ryan Sears of the Barrow County Sheriff's Office.

Deputies evacuated the area as a precaution and called in a bomb disposal unit from the nearby University of Georgia Police Department.

The bomb technicians determined it was a military device. They then turned the scene over to a U.S. Air Force Explosive Ordnance Device Unit from Dobbins Air Force Base. The military personnel transported the bomb to the Barrow County Sheriff's Office's shooting range and detonated it.

It was unclear Tuesday how the bomb came to be buried in the yard.