West Yorkshire Police have released a cctv image of a man suspected of being involved in a robbery in Bradford.
The man entered a shop in Huddersfield Road at about 9.45pm and placed a note on the counter demanding cash. he also produced a knife.
He then grabbed a small quantity of cash from the till and two packets of cigarettes before running out of the shop and along Huddersfield Road, towards Bradford and Low Moor.
Two staff members were left shaken by the incident, but otherwise uninjured.
Detectives are looking at links between this incident and three others in December, where notes were produced to demand cash.
The suspect is described as white, about six feet tall and of slim build. He was wearing a blue jacket, a grey hooded top and had a scarf covering his face. He was also wearing black gloves, white trainers and a pair of dark glasses.