The Major Crimes Unit of the Knox County Tennessee Sheriff’s Office is currently investigating an attempted robbery that occurred on Thursday, June 21, 2018. The attempted robbery occurred at a Subway restaurant located at 7654 Oak Ridge Highway around 10am. A suspect entered and showed a weapon, demanding money. The employee at the restaurant fled, as did the suspect without getting any money. The suspect is described as standing around 5’9” or 5’10” tall, thin build, around 140-160 pounds. He was wearing a dark colored ski mask, white shirt, and dark pants. The suspect left in a dark colored Dodge Avengers. Anyone with information is asked to call the Knox County Sheriff’s Office at 865-215-2243.