North Wales Police are advising shopkeepers to be aware of counterfeit currency being tendered.
Although there have been no reports of dodgy cash in Wrexham, the warning has been made across North Wales following incidents up the coast in the Prestatyn and Rhyl areas.
The incidents have been reported over the past week where counterfeit Royal Bank of Scotland £20 notes have been offered.
Crime officer David Williams said: “Although counterfeit currency is rare, we are asking businesses to be particularly mindful when such notes are tendered and to raise awareness of these incidents with their respective staff.”
“As counterfeit notes pose no monetary value, by raising vigilance this will assist in ensuring businesses are not at a financial loss.”
“Such notes can be part of organised criminal activity and each note will be treated as evidence towards the bigger picture.”
Top pic: Real notes.