A handout picture released by the official Syrian Arab News Agency (SANA) on February 21, 2013 shows Syrians carrying an injured man after a powerful car bomb exploded near the headquarters of Syria's ruling Baath party in the centre of Damascus. The blast sent thick smoke billowing across the capital's skyline and all roads in the area were quickly sealed off, an AFP correspondent said. AFP PHOTO/HO/SANA == RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO/HO/SANA" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS ==