Rebels in Syria Capture Al Qaeda Affiliate's Headquarters in Aleppo

More than 270 people have been killed in the latest fighting between opposition forces

Islamist rebel brigades are reported to have seized the headquarters of Islamic State in Iraq and the Levant (ISIS) in the northern Syrian city of Aleppo.

The Syrian Observatory for Human Rights said it was not clear what had happened to the jihadists who had been at the former hospital in the Qadi Askar area.

A video posted online showed rivals proclaiming their victory there.

Recent days have seen fierce fighting in several Syrian towns between the al-Qaeda affiliate and other rebel groups.