Democrats on Thursday lambasted a Pentagon investigation into abuses at Abu Ghraib and other US military prisons, which found that no Pentagon policy was responsible for abusive treatment of prisoners.

The Pentagon on Thursday released a summary of the Church report, its most comprehensive investigation into prisoner abuse in Iraq and Afghanistan. The report found evidence that the military had “missed opportunities” to prevent abuses, but concluded that no senior Pentagon officials or policies were responsible for the kinds of abuses committed by US soldiers at Abu Ghraib and elsewhere.