Campbellsville Police warned businesses that counterfeit money was passed in the area on Tuesday.
Investigators said a bogus $100 bill was passed at a business in the Green River Plaza Shopping Center.
Police said the serial number on the bill was: KK03498527C.
They said when the bill was checked with a currency pen, it showed the bill was good, but investigators said they discovered it was actually a $10 bill that was made to look like a $100 bill.
Investigators said when the bill was held up to the light, the water mark was the face of Alexander Hamilton instead of Benjamin Franklin.
Any business or individual who suspects counterfeit money, call the Campbellsville Police Department at 270-465-4121 or 270-465-4122.