Last week, the Buffalo Police Department issued a warning to retailers about counterfeit $20 bills possibly being passed in the area.
Today, the BPD has issued a second warning after learning of incidents in Gillette and South Dakota.
Police Chief Jason Carder explains further.
Carder encouraged retailers questioning any bills to call local police for assistance.
In Buffalo call 684-5581, and in Sheridan call 672-2413.