The head of the Arab League said on Monday the Syrian army's use of heavy weapons against civilians was an escalation that edged the country towards civil war. 

"We follow with great anxiety and irritation developments in the field situation in Syria, and the escalation of military operations in the city of Homs and rural areas of Damascus, and the Syrian armed forces' use of heavy weapons against civilians," Arab League chief Nabil Elaraby said in a statement. 

In the statement published by the Egyptian state news agency, Elaraby said the escalation took the crisis in Syria in "a serious direction", adding that it pushed "conditions towards a slide towards civil war".  - Reuters