Officers are seeking witnesses following an armed robbery at a Corby bookmakers on Sunday 8 January.
Between 5pm and 5.30pm three men went into Coral Bookmakers, Welland Vale Road, one of which jumped over the counter with a knife and demanded money. He took money from the safe and till before jumping back over the counter.
The men, who had their faces covered, then left the store and are believed to have made off on foot.
Witnesses or anyone with information about this incident can contact police on 101 or Crimestoppers anonymously on 0800 111 555.