Syrian troops have been trying to capture Daraya for weeks, but have faced strong resistance from hundreds of rebels who have used Damascus suburbs to stage attacks on nearby government facilities.
The Britain-based Syrian Observatory for Human Rights and another activist group, the Local Coordination Committees, also reported shelling and air raids in other Damascus suburbs, including Shebaa and Aqraba near the international airport.
The LCC also said rebels fired several rockets from Daraya toward Assad’s People’s Palace on Qasioun Mountain, overlooking the capital. Syrian officials have previously denied claims by rebels that rockets have targeted the palace — one of three mansions Assad uses in the capital.
The activist groups also reported heavy clashes in the central city of Homs and the nearby town of Qusair, which is close to the border with Lebanon, and near a prison in the northwestern city of Idlib.
In the north, the Observatory reported two air raids — one in Al-Bab. which killed at least four people, and another in Manbij, which killed at least 12 people, including four children and women.
Doctors Without Borders, an international medical team, said a growing number of attacks in the northern province of Aleppo are likely to undermine its ability to provide medical care.
‘‘Besides the war-wounded and the direct victims of violence, the conflict is affecting the most vulnerable, especially people with chronic diseases, women and children,’’ said Miriam Alía, medical coordinator for the organization.
Associated Press writer Ali Akbar Dareini reported from Tehran and AP writer Suzan Fraser contributed from Ankara, Turkey.