DAMASCUS, Jan. 20 (Xinhua) -- An explosive device went off near the southern highway west of the capital Damascus on Sunday, leaving no victims, state TV reported.
The authorities rounded up the "terrorist" who planted the explosive device near the highway, close to the western Daraya suburb of Damascus.
Earlier in the day, an explosion was heard in the capital followed by gunfire.
The Syrian Observatory for Human Rights war monitor said people were killed or wounded in the explosion that was said to have taken place near an intelligence office near the southern highway.
The watchdog group said the explosion is not yet known whether caused by an explosive device or a booby-trapped vehicle.
The explosion comes after 13 months of no explosion in Damascus, which has become completely safe when the last rebel group evacuated its vicinity last May.
