Meanwhile, a car bomb exploded in a northeastern neighborhood of the Syrian capital on Thursday causing damages but no casualties, state media said, the third such blast in a city under regime control this week.
State news agency SANA said the bomb hit the Al-Adawi neighborhood just north of the central Old City district. A witness said the blast occurred near a hospital and security forces were examining a blown-up blue car in the street.
SANA reported 鈥渁 terrorist bombing in the Adawi area with an explosive device planted in a car, causing material damage but no casualties.鈥�
The Syrian Observatory for Human Rights said the blast hit near the embassy of key government ally Russia.
The Britain-based war monitor said four people were lightly wounded. On Tuesday, a car bomb detonated in the coastal city of Latakia, near Assad鈥檚 ancestral village, killing one person and wounding 14, state media reported.
On Sunday, a bomb exploded near a highway at the edge of Damascus and authorities arrested one attacker. Syria鈥檚 war has killed more than 360,000 people and forced more than half its pre-war population from their homes since it started in 2011 with the bloody repression of anti-government protests that dragged in global powers.
Though Assad has regained control over most of Syria with Russian and Iranian help, attackers have struck in cities he controls with suicide blasts and car bombs.
Latakia and central Damascus have stayed in the military鈥檚 hands throughout Syria鈥檚 eight years of war, avoiding the airstrikes that battered other big cities.
The Syrian regime in May retook a final scrap of territory held by Daesh in southern Damascus, cementing total control over the capital for the first time in six years.