He interrogated Ramzi bin al-Shibh who cooperated without resorting to coercive interrogation methods.
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He was involved at the start of the CIA interrogation of "high-value detainees," including Abu Zubaydah, Ramzi bin al-Shibh, Abd al-Rahim al-Nashiri, and Khalid Sheikh Mohammed.
Although only Ramzi bin al-Shibh was ever captured from among the six original names on the list, only Jdey and Boussora remain on the FBI Seeking Information - War on Terrorism list.
Together with al-Jazeera journalist Yosri Fouda he reported the only interviews ever freely given by the main organisers of the 9/11 attacks on America – Ramzi bin al-Shibh and Khalid Sheikh Mohammed.
They reported that he was the first senior al Qaeda member to be captured, and that his capture lead to a chain of captures that included Abu Zubaydah, Jose Padilla, Omar al Farouq, and Ramzi bin al-Shibh.
She is notable for the legal struggle she waged in order to meet her client, Ramzi bin al-Shibh, who refused to leave his cell.
He became involved in the planning of the September 11 attacks while attending Technical University of Hamburg (TUHH) in the late 1990s, meeting Mohamed Atta, Marwan al-Shehhi and Ramzi bin al-Shibh, forming in 1998 what is now known as the Hamburg cell.
Mohammed bin Rashid Al Maktoum | Ramzi Yousef | Ramzi bin al-Shibh | Zayed bin Sultan Al Nahyan | Sultan bin Mohamed Al-Qasimi | Osama Bin Laden | Maktoum bin Rashid Al Maktoum | Death of Osama bin Laden | Rashid bin Saeed Al Maktoum | Nahyan bin Mubarak Al Nahyan | Ich bin ein Berliner | Khalifa bin Zayed Al Nahyan | Bassam Abdullah bin Bushar al-Nahdi | Bae Soo-bin | Wu Bin | Wee Bin & Co. | Turki bin Faisal Al Saud | Sultan bin Zayed bin Sultan Al Nahyan | Said Ali bin Said Omar of Grande Comore | Qaboos bin Said al Said | Prince Zeid bin Ra'ad | Osama bin Laden's compound in Abbottabad | Mohammed bin Zayed Al Nahyan | King Saud bin Abdulaziz University for Health Sciences | Khalifa bin Salman Al Khalifa | Isa bin Salman Al Khalifa | Humaid bin Rashid Al Nuaimi | Hamed bin Zayed Al Nahyan | Bin bag | Al-Waleed bin Talal |
German authorities shared much of this information with the CIA, including Zammar's phone conversations with hijackers Marwan al-Shehhi, Mohamed Atta, Ramzi bin al-Shibh, and Said Bahaji.