The Jordanian -- identified as Diyar Ismail Mahmud -- also goes by the name of Abu al-Afghani. U.S. officials say they have no evidence to support the claim that Mahmud killed the U.S. soldiers.
Al-Rubay'i says security forces also captured the leaders of the Umar Brigade, a wing of the Al-Qaeda in Iraq network. The Umar Brigade has claimed responsibility for numerous deadly attacks throughout Iraq.
Al-Rubay'i identified the group's captured leader as Jassim Muhammad, who is also known as Abu Othman.