At least 20 killed in blast in Aleppo

At least 20 people have been killed in a blast in Aleppo, Syria, reports CNN Turk.

The blast hit in the Iranian training camp in the south of Aleppo, said a source from the scene on Sunday. Doctors and rescuers arrived to the scene.

Prior to the blast, unidentified planes had been fixed in the sky.

No official confirmation of the incident and its cause has been provided.