The Helena Police Department has posted a warning on social media about fake twenty dollar bills being passed around.

Helena PD/Facebook

The bills look like real currency, but the phrase "Only Motion Picture Purposes" is printed on the them.

Authorities warn that if people don't look closely at the bills they could easily be passed off as real in local businesses.

If you should happen to be given one of these fake bills, police would like you to call the dispatch center to report it. The non-emergency number for this case is 406-447-8461.