The Cheyenne Police Department is warning people to be on the lookout for phony $20 bills.

Police spokesman Kevin Malatesta says the funny money has been passed a several local businesses recently, and is asking people to pay special attention to any $20 bills they receive to make sure they are legitimate.

Police are also asking anyone who may have information on the phony bills or the people making them to call the Silent Witness hotline at 638-TIPS.

Tipsters may remain anonymous and be eligible for a cash reward of up to $1000.