convenience stores are in on the fraud. it is a story that should outrage all of us and police are trying to put a stop to it. cnn s john zarrella. reporter: female s getting out and walking toward the front door. reporter: an under cover agent walks into a small convenience store in tampa. wearing a recording device she approaches the cashier with a deb ied card. while they re negotiating she picks up some chips, soda and cigarettes, she presses the clerk. really wanted a hundred back. the agent leaves with the cash and the goods. you see her out. small bag in her hand. reporter: what the store clerk just d florida department of law enforcement officials say is illegal and they say you should be outraged. it s directly stealing from the taxpayers of the united states. the debit card the undercover agent use side called an