In the latest violence, dozens were killed in a rebellious Damascus suburb when a government air strike turned a petrol station into an inferno, incinerating drivers who had rushed there for a rare chance to fill their tanks, activists said.

"I counted at least 30 bodies. They were either burnt or dismembered," said Abu Saeed, an activist who arrived in the area an hour after the 1 p.m. (1100 GMT) raid in Muleiha, a suburb on the eastern edge of the capital.