"Mortar shelling resumed in the early morning," said the Local Coordination Committees, a grassroots network of activists.
Speaking on condition of anonymity, he said he heard "rockets and shooting until the early hours of the morning," and that he saw four armoured vehicles heading towards the embattled areas.
One Tadamon resident told AFP he did not leave the neighbourhood despite Sunday's violence.
According to the Observatory, unprecedentedly violent clashes broke out in Damascus on Sunday between rebels and regime troops. Amid army shelling, the bloodiest battles took place in the south of the capital.
Activists reported "tanks entering Tadamon and ensuing clashes."
Observatory director Rami Abdel Rahman told AFP: "The most violent clashes took place in Tadamon, Kfar Sousa, Nahr Aisha and Sidi Qadad. The security forces are trying to reclaim these neighbourhoods but they have failed so far."
Source: AFP
