A bomber from an al-Qaeda-linked group in the Syrian city of Aleppo has killed at least 16 rival militants, a Britain-based group says.
The so-called Syrian Observatory for Human Rights, which relies on a network of spies working for the foreign-backed Syrian opposition, said on Sunday that the attack, carried out by the Islamic State of Iraq and the Levant (ISIL), also injured 20 people.
The deaths occurred after the militant blew up his explosives at a site used by foreign-backed insurgents in the northern city.
A British defense study showed that about 100,000 militants, fragmented into 1,000 groups, are fighting in Syria against the government and people.
The extracts of the study by defense consultancy IHS Jane’s were published on September 16, 2013.
IHS Jane’s estimates that some 10,000 militants are fighting for groups affiliated with al-Qaeda and the rest fight for different militant groups.
The analysis also said that a large number of extremists from foreign countries are active in Syria.
Syria has been gripped by deadly unrest since March 2011. According to reports, the Western powers and their regional allies — especially Qatar, Saudi Arabia, and Turkey — are supporting the militants operating inside Syria.
According to the United Nations, more than 100,000 people have been killed and millions displaced due to the violence.