
Four prisoners with links to al-Qaida being guarded by  American troops escaped from a maximum-security prison in Baghdad and  are still at large, U.S. and Iraqi officials said Thursday.
The breakout from Karkh Prison,  formerly called Camp Cropper, is an embarrassment for the U.S. military,  which has handed over control of all of the detention facilities it  used to run to the Iraqi government. But at the request of the Iraqis,  the U.S. has retained custody over some of the most dangerous prisoners,
 
including those with ties to terrorist groups or Saddam Hussein's  former regime.U.S. troops  found two detainees attempting to escape from the compound on Wednesday  evening, the military said in a statement. When they conducted a sweep  of the whole facility, they discovered that four other detainees were  missing.