Antennas of a former National Security Agency listening station are seen at the Teufelsberg hill (German for Devil's Mountain) in Berlin. Credit: Reuters
The Office of the Director of National Intelligencereleased three declassified documents Wednesday that authorized the bulk collection of telephone data, one of the surveillance programs revealed by former security contractor Edward Snowden.
The agency said in a statement that the declassification was made in the "interest of increased transparency."
The documents that were declassified include the 2009 and 2011 reports on the National Security Agency's Bulk Collection Program under the Patriot Act. In addition it released an April order from the Foreign Intelligence Surveillance Court which described how the data should be stored and accessed.