City police are out with new details concerning an overnight robbery at a Mac's convenience store on Simpson Street. Just before midnight, a masked man carrying a knife entered the store and demanded money from the clerk. The suspect made of with some money. The clerk was not injured. Police are looking for a Caucasian man approximately 5-foot-6 inches tall with a medium build with blond short hair. He was wearing black and white checkered pants, a grey hoodie and a blue toque. He had a Toronto Maple Leafs bandanna covering his face and he was wearing ear phones. Anyone with information about the identity of this male is asked to call the Thunder Bay Police or Crimestoppers.