A big explosion shook the central Damascus district of Mazraa on Thursday (February 21) which Syrian state media blamed on "terrorists" battling President Bashar al-Assad.
Syrian television broadcast footage of smouldering cars and said there had been casualties from the explosion, which it said struck a busy residential area of the capital.
The Syrian Observatory for Human Rights, a Britain-based group which monitors violence in the country, said a car bomb had detonated near a building used by the ruling Baath Party. Cars 300 metres away from the blast were badly damaged.
Activists reported at least two further blasts in the city after the Mazraa explosion, but there were no immediate details.
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