The P.F. Chang's restaurant chain said today it is investigating whether hackers stole customer credit and debit card information, KCCI.com reported. The restaurant, which has a location at Jordan Creek Town Center in West Des Moines, said the possible data breach came to light after a blogger discovered credit and debit card numbers for sale on an underground website, many of which were recently used at P.F. Chang's restaurants. The chain said it's working with authorities to learn more about the possible breach.