The Syrian Observatory for Human Rights obtained information from reliable sources revealing the identity of the perpetrator of the terrorist bombing, that targeted civilians in al-Bab city yesterday morning and killed 19 people including at least 13 civilians, and according to information obtained by the Syrian Observatory, the bomber is called (A. Y.) and he is from Jablat al-Hamra village at the eastern countryside of al-Bab, reliable sources said that “the perpetrator was formerly in the ranks of the Islamic State organization, and fought in the ranks of the organization in the battles of Manbij and al-Bab, after the Turks took control of al-Bab area he joined al-Hamzat Division of the Syrian National Army, before leaving the division as well, he was arrested yesterday in al-Bab city by the military police in the city.