People pray next to the coffins of people killed in explosion in the Maidan district of Damascus on Friday, at al-Hasan mosque in Damascus.

At least 11 people were killed in clashes between Syrian security forces and army defectors on Sunday, a UK-based rights group claimed.

According to the Syrian Observatory for Human Rights, which is based in London, the incident occurred in the village of Basr al-Harir in Daraa.

Top Arab League officials are due to hold a meeting in Cairo to discuss the situation in Syria amid reports that crackdown on opposition protesters is continuing. Several rights groups are demanding stern action against President Bashar al-Assad's regime.

Rights campaigners allege that attacks on protesters occur mostly after the League monitors leave the place. "They take the leaguers where they want. These are massacres. We have tens dying daily. Stores are closed ... civilian life is at a halt," a resident in the besieged city of Homs told CNN.

At least 27 people were killed on Saturday in different incidents across Syria, according to rights activists. Saturday also saw the burial of several of the victims who died in recent clashes and bombings. Hundreds of people converged on the city of Damascus to protest the killings.