ISIS prisoners, from right to left. Rached Abdullah Khattab 23 years old from Mosul in Iraq, Khattab said he executed 11 people. .Leith Ahmed Mohamed, 27 years old from Tal Khamis town in Syria. spying for ISIS,Islamic State of Iraq and Syria (ISIS) fighters captured by Kurdish People's Protection Units (YPG) fighters, the ISIS prisoners held in Al-Ya'robiya prison on the border with Iraq. December 15, 2014, Al-Ya'robiya, Syria: