Jersey Police are warning about fake £20 notes in circulation.
A set of three was tendered at a St Helier licensed premises last night.
Another different note was given to a takeaway delivery driver at Les Quennevais.
Officers are investigating two further forged notes at town businesses.
One batch bears the serial number CD076622 and the other QC416700.
Anyone with information should contact Jersey Police on 612612 or Crimestoppers anonymously on 0800 555 111.