MILFORD — Police have released a sketch of a suspect wanted in an armed robbery of a Subway sandwich shop on Elm Street on Wednesday and are hoping someone from the public recognizes the man witnesses say robbed the shop at knife-point.

Officers responded to the Subway Restaurant at 222 Elm St. just after 3 p.m. and were told that a man, possibly in his early 20s, brandished a knife and demanded money from the restaurant clerk, according to Capt. Christopher Nervik.

The suspect left the restaurant with an undisclosed amount of cash and headed east along the railroad tracks behind the restaurant. Officers, including the department’s K-9 unit, searched the area but were unable to locate the man. Nervik said the suspect is described as a white male, 5-feet-7-inches to 5-feet-9-inches tall, thin build, wearing a royal blue hoodie sweatshirt with white stripes on the upper arms, and black sweat pants. The suspect was wearing sunglasses and a blue bandanna at the time of the robbery. If you have informaction, call the detective division at 249-0630.