Militants fired rocket-propelled grenades at the Central Bank building in Damascus and also attacked a police patrol in the capital, wounding four police, state television has reported.
It said the attack on the Central Bank by "an armed terrorist group" caused only slight damage, and security forces were chasing the attackers of the police patrol.
Activists in the capital reported hearing several explosions and gunfire.
Syria's Deputy Foreign Minister Faisal Mekdad has criticised the UN, claiming that the government are being 'unfairly targeted'.
Major General Robert Mood is the man tasked with leading the mission to observe a ceasefire in Syria.