Gardaí have issued a warning to businesses in Letterkenny after a counterfeit €50 note was used on Thursday.
Gardaí have urged local businesses to be vigilant and to thoroughly check all notes received, as the fake notes may still be in circulation.
“Some of these notes can be produced in a very professional manner and the best way to ensure that it is genuine currency is to have staff use a counterfeit note checker pen or similar methods at the points of payment,” a spokesperson said.
Business owners have been asked to advise staff to be on the lookout for anyone who may try to pass counterfeit currency.