3,300 people killed in Syria rebel infighting this year

BEIRUT - Around 3,300 people have been killed in fighting between rebel factions trying to overthrow Syrian President Bashar al-Assad since the start of the year, the British-based Syrian Observatory for Human Rights said on Wednesday.

The small but powerful al-Qaeda-splinter group, the Islamic State in Iraq and the Levant (ISIL) has been caught up in clashes with other insurgents in Syria, including al-Qaeda's official Syria branch, the Nusra Front.

The fighting started over power struggles and territorial disputes and has since spread throughout rebel-held territory in Syria.