Two bombs exploded in the centre of the Syrian capital, Damascus, near a security building on Sunday.
The explosion occurred in the Mehdi area of Abu Remmaneh district, according to state TV and residents.
Officials said the building was a base for officers guarding the joint chiefs of staff offices nearby, but was empty at the time.
Earlier state media reported that a car bomb exploded on Saturday in a southern suburb of the city killing at least 15 people.
The bomb, in the Sbeneh district, caused extensive damage to nearby buildings.