The Syrian Observatory for Human Rights said 35 civilians were killed in military operations in the central provinces of Hama and Homs, as well as in Idlib province in the northwest and in Daraa in the south.

Fierce clashes also killed 18 soldiers and nine army deserters across the country, the Britain-based Observatory said.

According to the Observatory the highest toll was in the Idlib province, where 17 civilians were killed by government forces, including 10 in an attack on a busload of civilians trying to flee across the border to Turkey.

Twelve civilians were killed by government troops in Homs province, five in Hama and one in Daraa, cradle of the uprising against the Syrian regime, the Observatory said.

The latest deaths come despite a call by the UN Security Council for a ceasefire in Syria.

Monitors say more than 9,100 people have been killed in a revolt against Syrian President Bashar al-Assad that started with peaceful protests before turning into an increasingly armed revolt, faced with a brutal crackdown costing dozens of lives each day. (AFP)