State television in Syria has said that the death toll in the central Damascus car bomb has risen to 15 with a further 47 people wounded.
UN Secretary-General Ban Ki-moon said a team to investigate claims of chemical weapons use in Syria would be ready to deploy within 24 hours and urged the Syrian government to give the go-ahead so work could begin.
Ban said an advance team had been sent to Cyprus. "We are ready, it is a matter of time," he said. The full team will consist of 15 experts, including inspectors, medical experts and chemists.
"All we are waiting for is the go-ahead from the Syrian government to determine whether any chemicals weapons were used, in any location," Ban said.
A Syrian government official has told the Associated Press that a car bomb in central Damascus has killed 10 people.
A car bomb has exploded in central Damascus, causing casualties, state television has reported.
A resident in Damascus, who described the explosion as the biggest she had heard in the Syrian capital, said large plumes of smoke were rising from the area.