An explosion in the centre of the Syrian capital Damascus has killed at least 10 people and wounded 20 others.
The reports said a "terrorist suicide bomber" caused the blast near a mosque in the Midan area, but opposition activists blamed the Syrian government.
TV showed graphic images of the scene.
The incident came after UN Secretary General Ban Ki-moon warned that the government was "in contravention" of a UN and Arab League-backed peace plan.
Ban demanded that Damascus complied with the peace plan brokered by international peace envoy Kofi Annan without delay.
Syrian state TV said civilians and security force members were among the casualties in the Midan explosion, which it said happened as worshippers were leaving Friday prayers at the nearby Zain al-Abidin mosque.