Police officers have released a CCTV image of a man they wish to speak to following an incident at Morrisons in Victoria Promenade, Northampton.
The incident happened on Friday, February 11, between 1.15pm and 1.35pm, when two men entered the supermarket and stole bottles of whiskey.
They were challenged by a staff member who was then threatened with a metallic object, possibly a knife.
The man in the image could assist police with their enquiries so him, or anyone who recognises him, should call Northamptonshire Police on 101.
Incident number: 22000084747