From the Central Intelligence Agency:
[On Tuesday the CIA] released to the public 50 declassified documents — which constitute several hundred pages — related to the former Detention and Interrogation program. These documents can be found at CIA’s Freedom of Information Act (FOIA) online reading room.
The documents are being released pursuant to FOIA. This release covers internal CIA documents as well as other documents that were cited in the Senate Select Committee on Intelligence report on the program.