Rebel fighters celebrate in Shuhada Square, formerly known as Green Square, as they captured Muammar Gaddafi's Bab al-Azizya compound in capital Tripoli, Libya, Aug. 23, 2011. Libyan rebels Tuesday captured Muammar Gaddafi's Bab al-Azizya compound in capital Tripoli after heavy fighting and looted an armory inside the vast barracks, while the whereabouts of the embattled Libyan leader and his sons remain unknown to the moment. [Xinhua/Hamza Turkia]