Beyond what Sy Hersh had earlier.
The investigation conducted by Maj. Gen. Antonio Taguba into prisoner abuses at Abu Ghraib was begun last January, after Army investigators were tipped off to the abuses by an Army specialist named Joseph Darby. Taguba's job: to look at the performance of the 800th Military Police Brigade, which ran Abu Ghraib and other detention facilities in Iraq.
Taguba's report took the brigade's leadership to task, but it also blamed officers attached to the 205th Military Intelligence Brigade. Once his inquiry emerged publicly, in a report on 60 Minutes II and in a New Yorker story by Seymour M. Hersh, other inquiries followed. News reports focused on whether officials in the Bush adminstration encouraged mistreatment--assertions that were denied. The scandal has prompted howls of outrage, particularly in the Middle East, as the administration seeks to build a democracy in Iraq. The military investigations now underway include a review of prisoner deaths in Iraq and Afghanistan.
(more, a series of pdf files)
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http://www.usnews.com/usnews/issue/040719/usnews/19prison.b.htm>