Riverhead Town police said they are searching for a man who robbed a Subway shop at knifepoint in Wading River Wednesday night.

The suspect entered the store, located at 6302 Route 25A, at about 9 p.m. and demanded money at knifepoint, police said.

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Employees handed over some cash and the suspect fled, police said, adding that officers arrived at the scene a short time later with a canine unit but were unable to find the robber.

The suspect was described as about 6 feet tall and wearing a black hooded sweatshirt, sunglasses, dark pants and gloves. Police ask anyone with information to contact the Riverhead Police Department at 631-727-4500.