Six people, including four who worked at cashiers at Wal-Mart Stores Inc., are accused of a scam that cost Wal-Mart $125,000 and Citigroup Inc. $100,000 in fraudulent transactions.

The four cashiers were essential to the scam, StorefrontBacktalk reported Aug. 17. The suspects are accused of writing stolen credit card data onto gift cards and then charging massive purchases to the victims' accounts at the point of sale.

"Without a friendly cashier to intentionally avoid noticing that what looked like a gift card was processing as a credit card, the thefts would never have worked," the article said.

Two of the suspects arrived at the store as the four cashiers were being arrested, so all six were arrested together, the article said. The group was arrested Aug. 9 and charged with grand larceny and possession of forged instruments.