According to this AP report:
"The Pentagon's most senior civilian and military officials share a portion of blame for creating conditions that led to the Abu Ghraib prisoner abuse scandal in Iraq, according to a new report. The report, by a commission appointed by Defense Secretary Donald H. Rumsfeld, was presented to Rumsfeld Tuesday in advance of a Pentagon news conference to release the details. The commission was headed by James Schlesinger, a former secretary of defense. A person familiar with the report said it implicitly faulted Rumsfeld and Gen. Richard Myers, chairman of the Joint Chiefs of Staff, by finding that those responsible for the military prison system in Iraq were operating under confusing policies on allowable interrogation techniques. The person discussed some aspects of the report on condition of anonymity."