Al Qaeda safe house in Kabul

American counter-terrorism analysts justified the continued extrajudicial detention of many Guantanamo captives because they were suspected of staying in al-Qaeda safe houses, or guest houses—or because names matching theirs, or their "known alias" were found in the suspect houses.

During a November 15, 2001 press briefing by Spencer Abraham, Secretary of Energy, and Tom Ridge, Director of Homeland Security Ridge confirmed a report published by The Times that the U.S. had captured nuclear blueprints in an al Qaeda guest house in Kabul. Ridge stated that the capture of the nuclear blueprints in this al-Qaeda guesthouse was consistent with Osama bin Laden's plans to become a nuclear threat.

David Rohde, writing for the New York Times News Service, reported on November 17, 2001, that in addition to nuclear plans, safe houses contained flight simulator programs, documents about the handling of biological and chemical weapons, and information about flight training schools in Florida.

CNN claimed to have found and gone through the Kabul safe house used by Abu Khabbab, who they described as "Osama bin Laden's top chemical and biological weapons commander."CNN hired the Institute for Science and International Security to examine the documents they found, and its President, David Albright, confirmed the abandoned documents included plans for a nuclear bomb, and extensive training notes on the handling of radiological material.

The Combatting Terrorism Center reported that Abu Hafs al Masri (aka Mohammed Atef), al Qaida's military chief, was killed in an air strike on an "al Qa'ida safehouse" in Kabul, in November 2001.

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