State TV in Syria says a suicide bomber has killed at least 10 people and wounded 20 others in the capital Damascus.
The explosion happened as worshippers were leaving Friday prayers at the Zain al-Abidin mosque.
in the Midan area. Graphic images of the scene were shown on TV.
Midan has been the scene of frequent anti-government protests. An explosion in the same district in January reportedly killed at least 26 people and wounded 63.
Earlier on Friday, a separate explosion was reported in an industrial area of Damascus.
The reports could not be independently verified because of government restrictions on the media.
An uprising against President Bashar al-Assad started in March last year.