Mitchell Ferguson, 29,homeless was caught with a crack pipe and syringe on Race Street.
City police knew that state police had an arrest warrant for Ferguson in connection with the Dollar General Robbery hours earlier when they spotted him and another man walking down Liberty Street like the moron he is.
He was arrested on the warrant, and searched.
He is charged with possession of drug paraphernalia.
Ferguson is in the Butler County Prison on $100,000 bail on charges he robbed the Dollar General on Route 8 in Brady Township about 5:15 p.m. Sunday. He stole $213 from a cash register at the store, state police said.