Police are looking for a man who tried to rob a shop in Holbeach with what is believed to be a hand gun.
It happened at the Eastern European Shop in Park Road at about 7.30pm last Saturday when a man came in and demanded cash from a shop assistant.
He was dressed in black clothing, wore a black balaclava and a Lincolnshire Police spokeswoman said he was carrying what appeared to be a black hand gun.
No cash was handed over and the man eventually left, heading off through Carters Park.
Anyone with information should contact DC David Parrish on 101, quoting incident number 368 of December 15, or Crimestoppers on 0800 555 111.