Jabran Said bin al Qahtani, Sufyian Barhoumi and Ghassan Abdullah al Sharbi were captured in a safehouse in Faisalabad, Pakistan, together with approximately a dozen other suspects, including a senior member of the Al Qaeda leadership, Abu Zubaydah.
Public statements indicated that Abu Zubaydah, who was waterboarded during harsh interrogations by the United States, described a man "similar to" Harkat running a guest house in Pakistan that shuttled mujahideen to Chechnya, although he did not use Harkat's name.
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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.
Ghul was first mentioned in the 9/11 Commission, where he was stated to have led three people, including Mushabib al-Hamlan, to a waypoint controlled by Abu Zubaydah.
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.
Jay Bybee addressed a memorandum to John A. Rizzo, then the acting General Counsel of the CIA, dated August 1, 2002, in response to the CIA's reported request for legal opinion on 18 U.S.C. section 2340 (the torture statute) as applied to the interrogation of Abu Zubaydah.