The reported fighting in the capital, Damascus, and the second city of Aleppo marked the first such clashes there since the fall of the regime of Bashar al-Assad.
An ambush on a Syrian security patrol by gunmen loyal to ousted leader Bashar Assad escalated into clashes that a war monitor estimates have killed more than 1,000 people over four days.
More than 1,000 people have been killed in clashes in the coastal provinces of Syria, according to one war monitoring group.
In the worst outbreak of unrest since Syria’s transitional government took power, hundreds of people have been killed or wounded in clashes between the security forces and supporters of former President Bashar al Assad this week,