Police in Littleton, N.H., are investigating an attempted armed robbery.
They say it happened at the Circle K in Littleton just after 5 p.m. Tuesday. Police released surveillance images of the suspect demanding cash from the clerk. When he didn't get any money, he took off in a car.
The suspect is described as 5'6", with a medium build and light brown or hazel eyes. He was wearing a ski mask, and police say he had a gun.
A K-9 unit searched the area but was unable to find him. If you have any information call Littleton Police.