Northamptonshire police are looking for three men after an armed robbery at a Kettering bookmakers.
Corals in London Road was targetted on Monday evening.
One of the offenders jumped over the counter and demanded money. He had a grey face covering.
A second offender stood in the shop, close to the counter with a large, black coloured, wooden handled knife.
A third stood in the doorway of the shop
Cash was stolen but nobody was hurt.
The trio ran out the store, and turned left down Silverwood Road.
Anyone with information can contact Northamptonshire police on 101. Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111.