Witnesses are being sought after a robbery took place at Nene Valley Stores in St Andrews Street, Northampton.
The incident happened on Monday, August 23, at about 3.45pm, when a man entered the store, brandished a knife and stole cash. He then left the store, turning right onto St Andrews Street and then into the small alleyway leading to Mill Road.
The suspect was wearing navy blue jogging bottoms/jeans and a black Adidas hoody/zip up with a large Adidas emblem on the back.
Witnesses or anyone with information should call Northamptonshire Police on 101.