YANKTON, SD (KELO) -- Police in Yankton are warning the public about fake money turning up.

They received a report about a counterfeit fifty-dollar bill.

Police say the bill actually passed the marker test, but lacked a security strip.

The marker is a counterfeit detector pen that determines whether or not a bill's paper is genuine.

They're urging people to verify the authenticity of their money and call police if someone attempts to pass a fake bill.

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