"Since August 2002, nearly 100 detainees have died while in the hands of U.S. officials in the global “war on terror.” According to the U.S. military’s own classifications, 34 of these cases are suspected or confirmed homicides; Human Rights First has identified another 11 in which the facts suggest death as a result of physical abuse or harsh conditions of detention. In close to half the deaths Human Rights First surveyed, the cause of death remains officially undetermined or unannounced. Overall, eight people in U.S. custody were tortured to death".
So concludes human rights first in its report on deaths in US custody. It does make for happy reading! Read the Executive Summary of the Report here and download a pdf file if you want to read the Report in its entirety.