Syrian security forces have killed at least seven people in a flashpoint central city following a visit by members of a UN humanitarian team, activists said.
They said Monday's casualties included four people who died when troops opened fire to disperse anti-government protesters in Homs.
The Local Co-ordination Committees and the London-based Observatory for Human Rights reported that security forces have stormed several villages in the southern and northern parts of the country, making dozens of arrests.
Syrian President Bashar Assad has tried in vain to crush the five-month-old uprising against his rule.
About 2,200 people have died as a result of the crackdown, with 350 reportedly killed since the beginning of the month.