Musaad Aruchi
Musaad Aruchi is alleged to be a senior member of the al Qaeda leadership. Some of his files, secured when he was captured, in Pakistan, in April 2004, lead to the capture of Muhammad Naeem Noor Khan.
Human Rights Watch lists Aruchi as one of detainees in CIA custody.
References
Suspect arrested in Pakistan may hold al-Qaeda's secrets, The Guardian, August 8 2004
List of “Ghost Prisoners” Possibly in CIA Custody, Human Rights Watch, December 1, 2005