Aiken County sheriff's deputies told The Aiken Standard the man left the store on a riding lawnmower Thursday morning but didn't get far before he was arrested.
Capt. Troy Elwell says Ricky New has been charged with assault and battery, first degree and armed robbery.
Investigators say the suspect beat a store clerk with a stick during the robbery. New was being held at the Aiken County jail. It wasn't yet known if he has an attorney.