BEIRUT (AFP) - At least 274 people have been killed in four days in Syria since the outbreak of fighting between rebels and jihadists, the Syrian Observatory for Human Rights said on Tuesday.

The NGO said 129 fighters from moderate and Islamist rebel groups had been killed in the clashes since Friday, along with 99 members of the jihadist Islamic State of Iraq and the Levant (ISIL) and 46 civilians.