Newly revealed documents show the US held a German prisoner at Guantanamo Bay despite privately acknowledging his innocence just months after his capture. Murat Kurnaz was kidnapped and handed over to US forces in Pakistan in December 2001. Four weeks later, he became one of the first prisoners to arrive at Guantanamo, where he would spend the next four years. Declassified documents show US and German intelligence officials concluded he had no links to terrorism as early as September 2002. A newly formed military tribunal finally took up his case in 2004. But the panel ignored the intelligence assessments and twice ordered his ongoing imprisonment. During this time, Kurnaz says he suffered severe torture. He says he was beaten, given electric shocks, submerged in water, starved, and chained to a ceiling for days. Kurnaz says he saw several people die and often thought he would die himself. He was finally released in August 2006, nearly five years after his capture.