An armed robber threatened staff with a BB gun before demanding money in an alleged robbery at a convenience store in Spalding.
Lincolnshire Police issued a CCTV image of a man who entered the Fantasia store on Bourne Road at 8.27pm on Monday, November 5.
He threatened staff with a BB gun and asked them to empty the contents of the till into a grey rucksack, police said.
Staff refused and the man left empty-handed.
Anyone with information about the incident, or who can identify the man in the photograph, should contact police on 101 or via email at [email protected] quoting incident number 443 of November 5.
It can also be reported anonymously through Crimestoppers on 0800 555 111.