Militants from several Syrian opposition brigades have seized the headquarters of the jihadist Islamic State of Iraq and the Levant in the main northern city of Aleppo.
Syrian Opposition Observatory said "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 Observatory said it was unclear what had happened to "hundreds" of ISIL militants who had been inside the headquarters.
The opposition militants freed dozens of people who were being held prisoner in the ISIL headquarters.
Late Tuesday, an ISIL spokesman said the group would crush opposition fighters and warned that it considered members of the opposition Coalition and of al-Hr to be "legitimate targets".