Counterfeit currency is rife in Fife, businesses are being warned.
Criminals are using fake cash across the region, police have said, with the notes having been used in stores in Glenrothes, Auchtermuchty, Tayport, Newport-on-Tay, St Andrews, Lochgelly and Cairneyhill.
A 50-year-old man has already been charged in connection with an incident in Lochgelly, however, officers are warning that other suspects remain outstanding.
The suspects bought a low-value item in each store using forged £50 or £20 notes.
They are then given genuine currency as change, leaving each business out of pocket.
Retailers are now being asked to ensure staff check notes thoroughly and report any suspicions they have to police.
Detective Inspector Colin Robson of Dunfermline CID said: “I am urging all business premises across Fife to be on their guard in respect of this scam and ask for members of the public who are dealing with cash to check high value bank notes before accepting them as payment for goods.”
“In addition, anyone with information that can help the police identify whoever is responsible for these offences is asked to get in touch with us as soon as possible.”