US officials on Wednesday admitted that nearly 5.6 Million Fingerprints of its federal employees were also stolen in the massive data breach took place in April this year. The OPM, the US government agency that handles all federal employee data, had previously reported that some 1.1 million Fingerprints were stolen. The final number (5.6 million) isn’t confirmed yet, as an interagency investigation group will “continue to analyze and refine the data as it prepares to mail notification letters to impacted individuals”
Source: https://thehackernews.com/2015/09/opm-hack-fingerprint.html