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The Iowa-based Hy-Vee grocery store chain says it is working with payment card networks to identify what customer account information has been stolen. Hy-Vee says it is aware of the reports that the information is being sold on the internet for anywhere from $17 to $35. The company said it detected unauthorized activity on some of its credit card processing systems earlier this month. Hy-Vee operates more than 240 grocery stores in eight states, including Wisconsin.
