Attention cash users, the Ottawa Police Service is warning of counterfeit $100 bills circulating in the capital. The city’s police service says it has received multiple complaints reporting the use of counterfeit currency since December 2024. Officers say counterfeit bills are often deceiving, citing the difficulty to identify immediately by retailers. Police shared the following ways to help you identify counterfeit cash: People who have fallen victims to fake currency fraud are asked to report the incident to police at 1-888-495-8501 (toll-free).