The US Department of Justice charges the former US National Security Agency employee with deliberately hiding a national defense information from the National Security Agency, reports the Voice of America.

The Department of Justice believes, that the suspect was stealing and maintaining confidential information for 2 decades. 52-year-old Harold Thomas Martin, is accused of the largest theft in the US history of that nature. The Justice Department filed 20 indictments against Martin, each of which can put his in prison for 10 years.