NEW YORK, Sept. 24, 2013 /PRNewswire/ -- Pomerantz Grossman Hufford Dahlstrom & Gross LLP is investigating claims on behalf of investors of Official Payments Holdings, Inc. ("Official Payments" or the "Company") (NASDAQ: OPAY) (ISIN: US67623R1068) (CUSIP: 67623R1068)......
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