 Whereas some people mention a suicide bomber.The Islamic State (ISIL) has been forwarded responsible for the attack; however, some circles suggest the involvement of the United Arab Emirates.Others have speculated that his death may have been an accident in a weapons workshop in the complex he was in, or possible involvement from Western intelligence agencies, or that the attack was carried out by a rebel rival of Ahrar al-Sham, or by al-Nusra to weaken Ahrar al-Sham.