But Ghul is not the only such prisoner who remains missing. At least three dozen others who were held in the CIA's secret prisons overseas appear to be missing as well. Efforts by human rights organizations to track their whereabouts have been unsuccessful, and no foreign governments have acknowledged holding them.
In September 2007, Michael V. Hayden, then director of the CIA, said "fewer than 100 people had been detained at CIA's facilities." One memo released last week confirmed that the CIA had custody of at least 94 people as of May 2005 and "employed enhanced techniques to varying degrees in the interrogations of 28 of these "."