Two explosions hit Syria's military headquarters in Damascus at around 7 a.m. on Sept. 26, leaving at least two floors of the General Staff command building engulfed in flames. Unconfirmed reports claim that the Syrian army's chief of staff, Gen. Ali Abdullah Dayyoub, was killed in the blast, although Syrian Information Minister Omran Zoabi denied that any military leaders were killed. Plumes of black smoke and flames could be seen coming from the building after the blast, and residents reported hearing ambulance sirens and sporadic gunfire. Visit our Syria page for related analysis, videos, situation reports and maps. Rebels from the Free Syrian Army have claimed responsibility for the bombings and have said that dozens died in the attack. It is still unclear whether any Syrian military leaders were killed. But the building and the surrounding area are part of a Syrian military complex and are typically heavily guarded.