An increase in counterfeit currency cases have popped up throughout Putnam County and neighboring counties.  The Sheriff’s Department is actively investigating cases in which counterfeit $100 bills are being used to make smaller purchases at convenient stores, drug stores and eateries. The small purchase allows the suspect to walk away with legal US currency leaving their unsuspecting victims short, financially. Sheriff Langley is reminding merchants and consumers to check currency during a transactions for its authenticity. Counterfeit currency can easily by detected using the proper tools, commercially available or, if you suspect the currency is counterfeit, you can contact your local law enforcement agency.