'Torture at Afghan prisons' UN claims
6 September 2011 Last updated at 23:07 BST
The Nato led mission in Afghanistan has suspended the transfer of detainees to some Afghan jails following allegations of widespread torture and mistreatment of prisoners.
The BBC has learned that the accusations were made in a UN report which is yet to be finalised. It describes how prisoners were beaten and in some cases given electric shocks.
Quentin Sommerville, reports from Kabul.