At least 30 civilians were killed on Wednesday when Syrian warplanes bombed a petrol station in a rebellious suburb on the eastern edge of Damascus, two opposition campaigners on the scene said.

"I counted at least 30 bodies. They were either burnt or dismembered," said Abu Saeed, an activist who arrived at the area in the Muleiha suburb of Damascus an hour after the raid occurred at 1:00 PM (1100 GMT).

Another activist, Abu Fouad, said warplanes had bombarded the area as a consignment of fuel arrived and crowds packed the station.