Universal search
Search the sources
Keyword and entity retrieval over indexed evidence, hypotheses, and claims. Nothing is answered from model memory on this page. For a scored percentage with the working shown, open Fact or Fiction.
Topic remit
Day of
Engineering
Facilitation
Intelligence & process
Foreknowledge
Independent cluster
Entities
- Omar al-Bayoumi
- Nawaf al-Hazmi
- Khalid al-Mihdhar
- Fahad al-Thumairy
- Anwar al-Awlaki
- Mohdar Abdullah
- Caysan Bin Don
- Prince Bandar bin Sultan
- Abdussattar Shaikh
- Khalid Sheikh Mohammed
- Ali Abdul Aziz Ali
- Osama Bassnan
- Hani Hanjour
- Holly Ratchford
- Thomas Kean
- Mohamed Atta
- Larry Silverstein
- Norman Mineta
- Anthony Shaffer
- Kenneth Williams
- Coleen Rowley
- Zacarias Moussaoui
- Richard Gage
- Niels H. Harrit
- Barry Jennings
- Michael Hess
- John Farmer
- Mahmoud Ahmad
- George W. Bush
- David Chandler
- Ted Walter
- Tony Szamboti
- Kevin R. Ryan
- Natalie Schilling
- Jonathan H. Cole
- Philip Zelikow
- Peter Dale Scott
- Lance deHaven-Smith
- Kristina Claunch
- Mary Marshall Clark
- Richard A. Clarke
- Michael F. Scheuer
- Michael Horrocks
- Thomas W. Eagar
- Christopher Musso
Matching hypotheses
- H007Saudi-linked individuals knowingly facilitated Nawaf al-Hazmi and Khalid al-MihdharScore
- H004Additional energetic mechanisms contributed to WTC1 collapseScore
- H011NORAD/FAA response failure was more than accident (exercises, false timeline, or interference)Score
- H013UA93 was shot down rather than crashed solely by a passenger revoltScore
- H015Able Danger identified Atta's cell before 9/11 and was blocked from warning the FBIScore
- H016Urban Moving Systems detainees had organisational advance knowledge of the attacksScore
- H018WTC 7 was 'pulled' — a controlled demolition was ordered that afternoonScore
- H020Specific pre-attack warnings (Odigo and similar) show that some non-plot actors knew the morning's targetingScore
Matching claims
- verifiedCLM-001
Omar al-Bayoumi provided housing and banking assistance to Nawaf al-Hazmi and Khalid al-Mihdhar in San Diego in February 2000.
- disputedCLM-002
The 1 February 2000 restaurant meeting was a chance encounter.
- contradictedCLM-005
Fahad al-Thumairy provided no assistance to the two operatives.
- verifiedCLM-007
U.S. agencies had actionable information on Mihdhar's U.S. visa in January 2000 and failed to watchlist him until August 2001.
- indeterminateCLM-008
Bayoumi had advance knowledge that the 9/11 attacks would occur.
- verifiedCLM-011
American Airlines Flight 11 struck World Trade Center 1 at 08:46:40 on 11 September 2001.
- disputedCLM-016
Explosives or other additional energetic mechanisms contributed to WTC 7's failure.
- disputedCLM-018
UA93 was shot down by U.S. military rather than crashed by a passenger counterattack.
- disputedCLM-020
Able Danger identified Mohamed Atta's cell before 11 September and was blocked from notifying the FBI.
- unverifiedCLM-022
The five Urban Moving Systems detainees had advance knowledge of the attacks as an Israeli intelligence team.
- unverifiedCLM-024
Pakistan's ISI chief authorised a pre-attack transfer to Mohamed Atta.
- partially_supportedCLM-026
NORAD/FAA war-games and false timelines indicate the air-defence failure was more than accident.
- disputedCLM-030
WTC 7's entire measurable north and west rooflines instantaneously transitioned to free fall, a behaviour NIST's Stage 1 description conceals.
- disputedCLM-032
NIST NCSTAR reports on the WTC are false as engineering explanations.
- disputedCLM-033
First-responder explosion-language about the Twin Towers is evidence of demolition charges.
- disputedCLM-035
A small CIA Alec Station group intentionally withheld Mihdhar/Hazmi information from the FBI, and the purpose became to allow the attacks.
- well_supportedCLM-038
Street-level witnesses in lower Manhattan saw/heard a second aircraft hit the South Tower.
- well_supportedCLM-039
CIA senior products in summer 2001 described Bin Ladin attacks as imminent, including a strike in the US, without time/place/target.
- partially_supportedCLM-041
The U.S. pressed the Taliban to expel bin Laden more than 30 times, with only three approaches in the first Bush year.
- well_supportedCLM-042
About three-quarters of CIA materials cited by the 9/11 Commission, including all KSM interrogation reports, remained withheld as of the 2012 File posting.
Evidence supporting
61Odigo: two employees received a warning message about two hours before the first impact
Odigo instant-message warning reports (Ha'aretz / Washington Post, 2001) · 2001-09-28
Odigo confirmed that two employees received a pre-attack warning message; origin not established in public files.
PDB 6 August 2001: Bin Ladin Determined To Strike in US
President's Daily Brief, 6 August 2001 — 'Bin Ladin Determined To Strike in US' · 2001-08-06
The President received a 6 August 2001 brief stating Bin Ladin was determined to strike in the United States, including hijacking-related patterns.
CIA 9/11 File posting — 100+ FOIA documents, 19 June 2012
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2012-06-19
In 2012 the National Security Archive posted 100+ CIA documents cited in Commission footnotes, and stated that this was about one-quarter of the CIA material the Commission cited, with KSM interrogation reports still withheld.
BBC 23 September 2001: some named hijackers reported still alive
BBC News, 23 September 2001 — reports that some named hijackers were still alive · 2001-09-23
Reputable outlets reported in September 2001 that some named hijackers were alive.
Piers Robinson — Researching 9/11 and Beyond: Current Knowledge and Future Directions (Aug 2024)
Journal of 9/11 Studies · 2024-08-01
Robinson's 2024 survey cites Harrit 2009, Hulsey 2020, MacQueen eyewitness counts, NIST NCSTAR, the Commission, Ashton v KSA, and a 2023 Klarenberg claim of a CIA-Saudi recruiting operation involving two hijackers. He states official investigations are flawed and demolition of WTC 1/2/7 is most likely.
CIA SEIBs June–August 2001: Bin Ladin attacks 'imminent' / 'in the US'
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-07
CIA senior briefs from June–August 2001 repeatedly warned of imminent Bin Ladin operations, including a 7 August SEIB titled 'Bin Ladin Determined to Strike in the US', and a 24 August note that an associated individual was considering U.S. operations without timing or targets.
Evidence contradicting
10UA93 ACARS 09:23 and 09:28 mayday — NSAEBB 196 quotation
NTSB flight-path studies and ATC transcripts released via NSArchive (NSAEBB 196) · 2001-09-11
NTSB ACARS/ATC text quoted by NSArchive: UA93 received a 09:23 warning about cockpit intrusion and the NY impacts, then at 09:28 transmitted a mayday / 'hey get out of here' as it was hijacked.
Commission: hijacker-still-alive reports were mistaken identity
9/11 Commission Report · 2004-07-22
The Commission treats early 'hijackers alive' stories as identification errors.
Commission: UA93 crashed near Shanksville at 10:03:11 after a passenger revolt
9/11 Commission Report · 2004-07-22
UA93 impacted a field in Somerset County, Pennsylvania, at 10:03:11. Official transcription of the CVR describes a passenger counterattack.
Jonathan Cole — Discussion of Le & Bažant spontaneous-collapse paper (Jul 2023)
Journal of 9/11 Studies · 2023-07-01
An ASCE member published a 2023 discussion challenging Le & Bažant's spontaneous-collapse treatment of the towers.
John D. Wyndham — Problems with theories alternative to large-plane impact at the Pentagon (Nov 2011)
Journal of 9/11 Studies · 2011-11-01
The Journal of 9/11 Studies published a 2011 paper arguing that theories alternative to a large-plane Pentagon impact have problems.
NIST / critics: red/gray chips consistent with primer paint, not thermite
NIST WTC investigation FAQs (towers and WTC 7) · 2019-11-20
NIST and subsequent paint-chemistry arguments attribute the red chips to known coatings rather than explosives.
Ambiguous
75Alleged ISI / Mahmoud Ahmad / Saeed Sheikh wire to Atta
Reporting on Lt. Gen. Mahmoud Ahmad, ISI, and alleged Atta funding via Saeed Sheikh · 2001-10-01
Ahmad was in Washington on 9/11; press alleged an ISI-linked transfer to Atta that is not confirmed by a public U.S. primary in this lab.
FDNY Incident Action Plans collection (Ground Zero, Sep 2001–2002)
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-21
FDNY published daily Incident Action Plans for Ground Zero rescue and recovery from at least 21 September 2001 through early 2002, covering hazards, void searches, and DDC work in the pit. A 911DA collection hosts them.
Natalie Schilling — Linguistic analysis of AA11 transmissions purported to be Mohamed Atta (Apr 2026)
Natalie Schilling, Linguistic Analysis of AA11 transmissions purported to be Mohamed Atta (April 2026) and addendum (August 2026) · 2026-04-01
A 2026 linguistic report on AA11 audio attributed to Atta was published under IC911 Reports, authored by Natalie Schilling, Ph.D.
BBC Jane Standley reports WTC 7 collapsed while it stands on camera
BBC World — Jane Standley live report of WTC 7 collapse (11 September 2001) · 2001-09-11
BBC World reported WTC 7 had collapsed at a time when the building was still standing on camera.
Columbia 9/11 Oral History Project — holdings statement
Columbia Center for Oral History Research — September 11 Oral History Project · 2026-09-03
Columbia's 9/11 oral-history project reports five programmes, over 900 hours with over 600 people, 351 of them open, plus a 2011 book. Transcripts were not ingested.
CIA IG August 2001: CTC practices reviewed positively — vs later OIG/Commission
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-01
NSArchive records that a CIA Inspector General review completed in August 2001 praised CTC information-management and FBI cooperation, in contrast to the 2004 CIA OIG and the Commission.
Contemporary reports
69Odigo: two employees received a warning message about two hours before the first impact
Odigo instant-message warning reports (Ha'aretz / Washington Post, 2001) · 2001-09-28
Odigo confirmed that two employees received a pre-attack warning message; origin not established in public files.
Alleged ISI / Mahmoud Ahmad / Saeed Sheikh wire to Atta
Reporting on Lt. Gen. Mahmoud Ahmad, ISI, and alleged Atta funding via Saeed Sheikh · 2001-10-01
Ahmad was in Washington on 9/11; press alleged an ISI-linked transfer to Atta that is not confirmed by a public U.S. primary in this lab.
PDB 6 August 2001: Bin Ladin Determined To Strike in US
President's Daily Brief, 6 August 2001 — 'Bin Ladin Determined To Strike in US' · 2001-08-06
The President received a 6 August 2001 brief stating Bin Ladin was determined to strike in the United States, including hijacking-related patterns.
BBC 23 September 2001: some named hijackers reported still alive
BBC News, 23 September 2001 — reports that some named hijackers were still alive · 2001-09-23
Reputable outlets reported in September 2001 that some named hijackers were alive.
CIA SEIBs June–August 2001: Bin Ladin attacks 'imminent' / 'in the US'
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-07
CIA senior briefs from June–August 2001 repeatedly warned of imminent Bin Ladin operations, including a 7 August SEIB titled 'Bin Ladin Determined to Strike in the US', and a 24 August note that an associated individual was considering U.S. operations without timing or targets.
FDNY Incident Action Plans collection (Ground Zero, Sep 2001–2002)
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-21
FDNY published daily Incident Action Plans for Ground Zero rescue and recovery from at least 21 September 2001 through early 2002, covering hazards, void searches, and DDC work in the pit. A 911DA collection hosts them.
Later recollections / analysis
77CIA 9/11 File posting — 100+ FOIA documents, 19 June 2012
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2012-06-19
In 2012 the National Security Archive posted 100+ CIA documents cited in Commission footnotes, and stated that this was about one-quarter of the CIA material the Commission cited, with KSM interrogation reports still withheld.
Piers Robinson — Researching 9/11 and Beyond: Current Knowledge and Future Directions (Aug 2024)
Journal of 9/11 Studies · 2024-08-01
Robinson's 2024 survey cites Harrit 2009, Hulsey 2020, MacQueen eyewitness counts, NIST NCSTAR, the Commission, Ashton v KSA, and a 2023 Klarenberg claim of a CIA-Saudi recruiting operation involving two hijackers. He states official investigations are flawed and demolition of WTC 1/2/7 is most likely.
Natalie Schilling — Linguistic analysis of AA11 transmissions purported to be Mohamed Atta (Apr 2026)
Natalie Schilling, Linguistic Analysis of AA11 transmissions purported to be Mohamed Atta (April 2026) and addendum (August 2026) · 2026-04-01
A 2026 linguistic report on AA11 audio attributed to Atta was published under IC911 Reports, authored by Natalie Schilling, Ph.D.
NORAD exercises on 11 September including Vigilant Guardian
Michael Bronner, '9/11 Live: The NORAD Tapes,' Vanity Fair (August 2006) · 2006-08-01
NORAD was running exercises on 11 September that included hijack-related injects, and operators asked whether reports were exercise or real.
Columbia 9/11 Oral History Project — holdings statement
Columbia Center for Oral History Research — September 11 Oral History Project · 2026-09-03
Columbia's 9/11 oral-history project reports five programmes, over 900 hours with over 600 people, 351 of them open, plus a 2011 book. Transcripts were not ingested.
Graeme MacQueen — 156 eyewitnesses describing explosions at the Twin Towers (Toronto Report ch.8)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
MacQueen compiled 156 accounts, mostly FDNY oral histories, in which speakers used explosion/bomb language about the towers; he documents both the original wording and some later retractions.
Official documents
74PDB 6 August 2001: Bin Ladin Determined To Strike in US
President's Daily Brief, 6 August 2001 — 'Bin Ladin Determined To Strike in US' · 2001-08-06
The President received a 6 August 2001 brief stating Bin Ladin was determined to strike in the United States, including hijacking-related patterns.
CIA 9/11 File posting — 100+ FOIA documents, 19 June 2012
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2012-06-19
In 2012 the National Security Archive posted 100+ CIA documents cited in Commission footnotes, and stated that this was about one-quarter of the CIA material the Commission cited, with KSM interrogation reports still withheld.
CIA SEIBs June–August 2001: Bin Ladin attacks 'imminent' / 'in the US'
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-07
CIA senior briefs from June–August 2001 repeatedly warned of imminent Bin Ladin operations, including a 7 August SEIB titled 'Bin Ladin Determined to Strike in the US', and a 24 August note that an associated individual was considering U.S. operations without timing or targets.
NORAD exercises on 11 September including Vigilant Guardian
Michael Bronner, '9/11 Live: The NORAD Tapes,' Vanity Fair (August 2006) · 2006-08-01
NORAD was running exercises on 11 September that included hijack-related injects, and operators asked whether reports were exercise or real.
CIA IG August 2001: CTC practices reviewed positively — vs later OIG/Commission
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-01
NSArchive records that a CIA Inspector General review completed in August 2001 praised CTC information-management and FBI cooperation, in contrast to the 2004 CIA OIG and the Commission.
Urban Moving Systems five employees detained after being reported celebrating / filming
FBI files on Urban Moving Systems and five Israeli nationals detained 11 September 2001 · 2001-09-11
Five Urban Moving Systems employees were detained after witness reports they filmed and appeared to celebrate the attacks; they were later deported without terrorism charges.
Independent / media
49Odigo: two employees received a warning message about two hours before the first impact
Odigo instant-message warning reports (Ha'aretz / Washington Post, 2001) · 2001-09-28
Odigo confirmed that two employees received a pre-attack warning message; origin not established in public files.
Alleged ISI / Mahmoud Ahmad / Saeed Sheikh wire to Atta
Reporting on Lt. Gen. Mahmoud Ahmad, ISI, and alleged Atta funding via Saeed Sheikh · 2001-10-01
Ahmad was in Washington on 9/11; press alleged an ISI-linked transfer to Atta that is not confirmed by a public U.S. primary in this lab.
BBC 23 September 2001: some named hijackers reported still alive
BBC News, 23 September 2001 — reports that some named hijackers were still alive · 2001-09-23
Reputable outlets reported in September 2001 that some named hijackers were alive.
Piers Robinson — Researching 9/11 and Beyond: Current Knowledge and Future Directions (Aug 2024)
Journal of 9/11 Studies · 2024-08-01
Robinson's 2024 survey cites Harrit 2009, Hulsey 2020, MacQueen eyewitness counts, NIST NCSTAR, the Commission, Ashton v KSA, and a 2023 Klarenberg claim of a CIA-Saudi recruiting operation involving two hijackers. He states official investigations are flawed and demolition of WTC 1/2/7 is most likely.
BBC Jane Standley reports WTC 7 collapsed while it stands on camera
BBC World — Jane Standley live report of WTC 7 collapse (11 September 2001) · 2001-09-11
BBC World reported WTC 7 had collapsed at a time when the building was still standing on camera.
NORAD exercises on 11 September including Vigilant Guardian
Michael Bronner, '9/11 Live: The NORAD Tapes,' Vanity Fair (August 2006) · 2006-08-01
NORAD was running exercises on 11 September that included hijack-related injects, and operators asked whether reports were exercise or real.
Unresolved contradictions
- CTR-005Chance meeting vs planned meeting
- CTR-007WTC7 mechanism: NIST fire vs Hulsey not-fire
- CTR-017WTC 7 Stage 1: NIST gradual vs Chandler instantaneous whole-roofline free fall
- CTR-021CIA IG August 2001 praise vs 2004 CIA OIG / Commission on CTC