The following documents have been declassified by the CIA pertaining to the 9/11 attacks.

Central Intelligence Agency (CIA) Inspector General Report on 9/11/01

OIG Report on CIA Accountability with Respect to the 9/11 Attacks – Executive Summary [19 Pages, 1MB]

Inspection Report of the DCI Counter-Terrorist Center Directorate of Operations, August 2001 [81 Pages, 1.68MB]

Joint Response to Draft IG 9/11 Report [15 Pages, 1.05MB]

Joint Response to OIG Report – “Accountability Regarding Findings and Conclusions of the Joint” [18 Pages, 1.20MB]

Memorandum to Inspector General Helgerson from George J. Tenet Regarding Assessment of Performance [19 Pages, 1.44MB]

Office of Inspector General Report on Central Intelligence Agency Accountability Regarding Findings [490 Pages, 17.9MB]

Response to Inspector General’s 9/11 Accountability Final Draft Report [10 Pages, 0.8MB]

Interrogation

OIG Report on Counterterrorism Detention and Interrogation Activities, 07 May 2004 [159 Pages, 8.83MB] – This report came in response to my FOIA request to the CIA regarding the treatment of Khalid Sheikh Mohammed while at Guantanamo Bay.