Businesses in Fife have been urged to be extra vigilant following the discovery of counterfeit notes.
A number of fake £20 Clydesdale Bank notes have been presented at retail premises in west Fife.
Local officers are carrying out various lines of inquiry in an effort to trace those responsible and they have asked for the public’s help.
Community sergeant Gordon Hood said: “We advise local businesses to ensure staff check all notes when taking payment.”
He said detector lights or pens could help determine whether a note was genuine and warned it was common for criminals to pay for small value items with a high denomination note.
“I urge businesses to be aware of this,” he said.
Anyone who comes across a suspect note is advised in the first instance to report it to the police on 101 or anonymously through Crimestoppers on 0800 555 111.