WASHINGTON - An Al-Qaida suspect who was subjected to harsh interrogation techniques at a secret CIA prison in early 2004 provided his interrogators with a clue -- the nom de guerre of a mysterious courier -- that ultimately proved crucial to finding and killing Osama bin Laden, officials said Wednesday.
The CIA had approved use of sleep deprivation, slapping, nudity, water dousing and other coercive techniques at the now-closed CIA "black site" in Poland where the Pakistani-born detainee, Hassan Ghul, was held, according to a 2005 Justice Department memo, which cited Ghul by name. Two U.S. officials said Wednesday that some of those now-prohibited practices were directed at Ghul.
Ghul was not waterboarded -- subjected to near-drowning -- the most notorious interrogation technique and one that critics describe as torture.
Two other CIA prisoners -- Al-Qaida's operations chief Khalid Sheikh Mohammed, and his successor, Abu Faraj al-Libbi -- gave their interrogators false information about the courier after they were waterboarded repeatedly, U.S. officials said.
Those lies also played a role in the manhunt, however. Over time, they were viewed as evidence by CIA analysts that Bin Laden's top deputies were trying to shield a figure who might be a link to the Al-Qaida leader's hide-out, according to U.S. officials briefed on the analysis. "The fact that they were covering it up suggested he was important," a U.S. official said.
In the end, intelligence gained from interviews with numerous detainees, high-tech eavesdropping and surveillance, and other investigative spadework provided insights into people who were close to Bin Laden. No one source or bit of intelligence was so decisive or critical that it instantly solved the puzzle, officials said.
The nuances of that complex chain of events were often lost Wednesday amid a renewed public debate about the efficacy and morality of coercive interrogations that the CIA carried out under President George W. Bush.
"I think the issue has been mischaracterized on both sides," said a former CIA official who was involved in internal debate over the so-called "enhanced interrogation techniques" program at the time. "The people who say 'enhanced interrogation techniques' directly led to catching Bin Laden are wrong, and the people who say they had nothing to do with it are also wrong."