"These documents provide further evidence that the torture of prisoners in U.S. custody abroad was not aberrational, but was widespread and systemic," said Amrit Singh, a staff attorney with the ACLU. "They only underscore the need for an independent investigation into high-level responsibility for prisoner abuse."

One of the documents released to the ACLU is a list of at least four prisoner deaths that were the subject of Navy Criminal Investigation Service (NCIS) investigations. The NCIS document contains new information about the deaths of some of these prisoners, including details about Farhad Mohamed, who had contusions under his eyes and the bottom of his chin, a swollen nose, cuts and large bumps on his forehead when he died in Mosul in 2004. The document also includes details about Naem Sadoon Hatab, a 52-year-old Iraqi man who was strangled to death at the Whitehorse detainment facility in Nasiriyah in June 2003; the shooting death of Hemdan El Gashame in Nasiriyah in March 2003; and the death of Manadel Jamadi during an interrogation after his head was beaten with a stove at Abu Ghraib in November 2003.