Authorities in the Florida Keys are warning residents to take an extra look at any $100 bills they have.

Several counterfeit $100 bills intended for filmmaking have been circulating in the Lower Keys and Key West, according to police.

The bills are marked as fake but may pass as real at a casual glance.

A similar warning was issued recently regarding fake $20 bills in September.

Officials reminded residents that attempting to pass them off as real could lead to an arrest.

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