Chaos in Damascus.
At least nine people are killed in the Syrian Capitol Friday, in another blow to a fraying U.N.-brokered truce between President Bashar al-Assad and rebels fighting for his downfall.
The explosion came as worshippers were leaving a mosque, which was under heavy security in preparation for anti-Assad demonstrations after Friday prayers.
State media says about 28 people were wounded in the blast,
There was no immediate claim of responsibility.
The United Nations says Syrian forces have killed more than 9,000 people in the 13-month-old revolt against Assad. Damascus says insurgents have killed more than 2,600 soldiers and police.
On Thursday the U.N. accused Damascus of breaking its pledge to withdraw heavy weapons and troops from towns. On Friday the White House signaled that it would increase pressure on the Syrian government.
Deborah Lutterbeck, Reuters