Gardai in Letterkenny are warning businesses to be aware that fake 50 euro notes may be circulating in the town.
A number of notes have been detected by a number of taxi drivers over the weekend.
The fake notes have a number of features that make them easily identifiable when held up to a light.
However Gardai say if staff are busy or the notes are handed over in dark premises they may be mistaken for the real article.
Local Taxi Driver Patrick Gallagher received one of the fake notes over the weekend.......