About 400 Manhattan High School football discount cards were stolen from the school's west campus.
Riley County police are warning people against purchasing any gold discount cards.
According to police, football coach Butch Albright reported the theft occurred between between noon on July 17 and 6:30 the next morning.
The cards are part of a fundraiser, they are sold for $15 each and offers several discounts around the Manhattan area.
New legitimate cards will be available for purchase on July 23. The cards will be altered so that customers and businesses will be able to distinguish them from the stolen gold cards.