A Kentucky man is accused of robbing a gas station using an unusual weapon -- a tube of hand lotion.

William Walls, 35, of Louisville, was arrested Sunday, four days after the alleged robbery, WDRB News reported. He is charged with first-degree robbery.

Police officials in West Buechel, a small city southeast of Louisville, said that a man walked into a Murphy USA station on Nov. 22 and, indicating he had a gun in his shirt, pointed it at the employee and demanded money. The clerk handed over the cash and the robber fled in a vehicle parked outside.

The fleeing man dropped a sack containing what was assumed to be his gun. Police looked inside and instead found a tube of lotion.

Walls became a suspect in the case when a witness came forward and said he recognized him as the man who robbed the store, WDRB reported. Investigators said Walls confessed to committing the crime.