A new U.N. report says the torture of prisoners in Afghanistan is not only continuing but may be on the rise. Investigators say they have uncovered ongoing abuses in Afghan prisons, including the beating of detainees with cables and hanging them by their wrists. More than half of prisoners interviewed said they had been tortured, higher than the previous rate of 24 percent in 2011. The report also cites an unnamed Afghan official confirming prisoners are being held at secret detention sites to avoid international scrutiny. Last week the U.S. military said it had halted the transfer of detainees to some Afghan prisons over ongoing torture.