Chaos on the streets of Damascus after a bomb detonates on a main road in the Syrian capital.<br /> <br />The target was not immediately clear, but the blast exploded near the former Interior Ministry building.<br /> <br />State-run Suriya television reported at least 13 killed and 70 injured.<br /> <br />The British-based Syrian Observatory said nine civilians and three security personnel had been killed, but anticipated that the death toll would rise.<br /> <br />Pro-government channel, al-Ikhbariya, broadcast instrumental music over images of bloody streets.<br /> <br />Amateur video that cannot be verified by Reuters purportedly showed smoke rising above the city caused by the bombing.<br /> <br />The interior minister blamed rebels, saying the attack was a response to recent gains by the Syrian army around the city centre.<br /> <br />He also claimed the U.S. and Israel were directing the group behind the attack, which came a day after the prime minister survived an assault on his convoy.<br /> <br />As the smoke cleared, some
