"There was shelling last night in the old part of the city, in Jouret al-Shiyah and al-Qaradis. And I have heard eight shells fall in the past hour," Karm Abu Rabea, a resident activist who lives in an adjacent neighbourhood, said on Saturday morning.
The British-based Syrian Observatory for Human Rights said shelling had wounded several people overnight.
It came after six people were killed during protests on Friday, activists said. Syrian forces used live fire, teargas and clubs to beat back tens of thousands of protesters who took to the streets across the country in powerful and often jubilant displays of defiance. But the death toll was said to be far lower than usual as the UN-brokered truce largely held up.
The UN security council was scheduled to vote on Saturday on a resolution authorising the deployment of the first wave of UN military observers to monitor the ceasefire.
The draft resolution calls on both sides to immediately "cease all armed violence in all its forms" and calls on the Syrian government "to implement visibly" the international envoy Kofi Annan's demand that it pull troops and heavy weapons out of cities and towns.
