BEIRUT (AFP) - Fighters from several Syrian rebel brigades have seized the headquarters of the jihadist Islamic State of Iraq and the Levant in the main northern city of Aleppo, an NGO said on Wednesday.

"Fighters from several Islamist rebel brigades took control of the children's hospital in the Qadi Askar district, which is the headquarters of the Islamic State of Iraq and the Levant in the city," the Syrian Observatory for Human Rights said.