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Popular restaurant investigating whether credit card numbers were stolen

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A popular restaurant says it is trying to determine whether thousands of credit and debit card numbers have been stolen from its restaurants nationwide.

A spokesperson for P.F. Chang’s will not confirm a breach, only that the company is investigating the situation.

Security researcher Brian Krebs says banks first noticed a problem when stolen information reportedly appeared on the same online black market where millions of stolen Target cards were sold last year.

Experts believe the data may have been taken from P.F. Chang’s restaurants between March and May 19, 2014.

The high-end restaurant chain has more than 200 locations throughout the country.