(CNN) -- An alleged new case of waterboarding emerged in a massive report Thursday detailing brutal CIA interrogations of Libyan detainees last decade before they were handed over to Moammar Gadhafi's regime. Mohammed al-Shoroeiya "provided detailed and credible testimony that he was waterboarded on repeated occasions during U.S. interrogations in Afghanistan," Human Rights Watch said in a 200-plus page report. The allegations directly challenge long-standing claims by President George W. Bush and his administration that only three terror suspects, none of whom were Libyan, were waterboarded during interrogations. Human rights groups consider waterboarding -- in which a prisoner is restrained and water poured over his mouth and nose to produce the sensation of drowning -- a form of torture.
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NEW: An expert says torture claims have been part of an anti-U.S. "propaganda war"
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The CIA says it can't comment on the allegations in a Human Rights Watch report
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Human Rights Watch says it has proof of CIA abuses against Libyans
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Allegations challenge claims by George W. Bush's administration that only 3 people waterboarded
A number of the detainees were picked up in @placeholder, according to the report.