A U.S. newspaper has released more photographs and a video of abused prisoners at Baghdad's Abu Ghraib prison, as well as previously secret statements by Iraqis telling investigators how they say they were mistreated.

The Washington Post report Friday includes more photographs of detainees being physically and emotionally abused by U.S. soldiers. The images show greater violence toward detainees and some abusive techniques not shown before.

One photo shows a soldier who appears to be ready to punch one of several hooded detainees on the floor. In the sworn statements, the newspaper says one prisoner detailed witnessing an Army translator having sex with a teenage boy at the prison.

The newspaper says the photos and the video were presented to Army investigators in January.

The report says the new images do not shed light on who directed the abuse. So far, seven military police have been charged with mistreating and sexually humiliating detainees at Abu Ghraib, and one has pleaded guilty. Many of those charged say U.S. military intelligence officers directed their actions.

U.S. Defense Secretary Donald Rumsfeld says the Pentagon is cooperating in the investigations. He warned in testimony before the U.S. Congress earlier this month that more sadistic and cruel photos and videos existed and if released to the public, they could further inflame worldwide outrage.