A roadside bomb has exploded in Syria near a convoy carrying the head of the UN observer mission.
The blast happened in the Douma district of Damascus, but no casualties have been reported.
Visiting UN peacekeeping chief Herve Ladsous and Major General Robert Mood, the chief of UN observers in Syria were some 150 meters away, along with accompanying journalists, when the blast went off.
It was not immediately clear what the target of the explosion was, but the car was parked near a security checkpoint.
There is so far no comment from the mission itself.
Douma, on the outskirts of the capital Damascus, was one of the first areas to join the uprising against President Bashar al-Assad.
Also on May 20, the British-based rights group the Syrian Observatory for Human Rights said Syrian army shelling killed 16 in the town of Souran in the central province of Hama.
Based on reporting by AP, BBC, and Reuters