Pictures obtained by Syrian opposition activists show executions , interrogations . Activists describe Abu Ahmed as an `` amir , '' a commander , responsible for carrying out justice , ISIS style . The ringleader , Abu Ahmed al - Iraqi , may be leader of Islamic State in Iraq and Syria . ISIS is a jihadist group opposed to the regime of Syrian President Hassan al - Islam . Al Qaeda leader Ayman Al - Zawahiri calls for the group to leave Syria .
Pictures obtained by Syrian opposition activists show executions , interrogations . The ringleader , Abu Ahmed al - Iraqi , may be leader of Islamic State in Iraq and Syria . ISIS is a jihadist group opposed to the regime of Syrian President Hassan al - Islam . Al Qaeda leader Ayman Al - Zawahiri calls for the group to leave Syria .