Columbus police are warning the public to be on the lookout for "black money" being used as part of a scam.
Investigators said the suspects will trick people into buying currency that they say was illegally smuggled and dyed black.
The suspects use a real dyed bill and wash it to show the victim what they will get when the money is cleaned.
They give the "dyed bills" to the victim and take real money claiming they need it to buy more chemicals.
The victim is left with black paper cut into the shape of the currency.
Police said they recently found signs of the scam in a hotel room that they were investigating as a possible meth lab after the manager reported chemicals in the room.
Officers found banded black papers soaking in a solution and two dark colored $20 bills.
The two men in the room have not been charged or named.
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