Police have issued CCTV images of three men they'd like to speak to after fake £50 notes were used in Bicker near Boston.
They all used or tried to use the counterfeit currency at the bar at the Supreme Inns in Donnington Road on November 2.
The first man paid for goods at the bar with a fake £50 note and received change.
A second man is believed to have then attempted to do the same but a staff member, who believed the note was a fake, refused to take the money.
An attempt to use a £50 note was then made by a third man who became argumentative when staff refused to take the notes.
The first man has been described as was wearing a cap, glasses and a dark jacket.
The second man had his hair shaved on the sides and was wearing a long top and jeans and was in his 20s.
The third man has been described as having an Irish accent and was wearing bright blue shorts and a dark top.
If you have any information about the incident or the men in the photographs, police ask that you get in touch.
You can call 101, quoting Incident 418 of November 2; email firstname.lastname@example.org and include Incident 2 of November 2 in the subject line; or contact Crimestoppers, anonymously, on 0800 555111.