New pictures showing apparent US abuse of prisoners in an Iraqi jail have been shown by an Australian TV channel.
The images have not been published before but are said to show prisoners being harmed in Iraq's Abu Ghraib prison in 2003.
The images are thought to be from the same source as those that led to several US troops being jailed in 2005.
The US says abuse at the jail has already been investigated but the photos could trigger more violence.
Previously US President George W Bush has said the abused uncovered at Abu Ghraib was a "disgrace".