"We're gradually working the process to take them out of the equation," the military official said. "We developed the information. We also developed a prosecutorial case."
Bayan Jabr, a prominent Shiite, was interior minister at the time of the investigations detailed in the documents and has been accused of allowing Shiite paramilitary fighters to run rampant in the security forces.
U.S. officials interviewed for this article said the ability of Jabr's replacement, Jawad Bolani, to deal with the corruption and militia influence in the police force will be a crucial test of his leadership.
The challenges facing Bolani, a Shiite engineer who has no policing experience and entered politics for the first time after the U.S.-led invasion in 2003, are highlighted in a recent assessment by police trainers hired by the State Department. According to the report, corruption in the Interior Ministry has hampered its effectiveness and its credibility with Iraqis.
"Despite great progress and genuine commitment on the part of many ministry officials, the current climate of corruption, human rights violations and sectarian violence found in Iraq's security forces undermines public confidence," according to the document, titled "Year of the Police In-Stride Assessment, October 2005 to May 2006."
Elements of the Ministry of the Interior, or MOI, "have been co-opted by insurgents, terrorists and sectarian militias. Payroll fraud, other kinds of corruption and intimidation campaigns by insurgent and militia organizations undermine police effectiveness in key cities throughout Iraq," the report says.
The report increased tensions between the Pentagon, which runs the police training program, and the State Department, which has been pushing to expand its limited training role in Iraq, said a U.S. official who spoke on condition of anonymity.
The report strikes contradictory tones, saying that the Interior Ministry continues to improve and that its forces are on track to take over civil security from U.S. and Iraqi military elements by the end of the year, while outlining shocking problems with corruption and abuse.
"The document basically shows that Interior Ministry management has failed," the U.S. official said. "The document didn't directly address U.S. policy failures, but I guess it does show that too."
Interior Ministry officials have taken steps to "improve detainee life," the report says. "However, there are elements within the MOI which continue to abuse detainees."