This is the horrifying moment a jihadist for the so-called Islamic State executed his own brother after he was accused of trying to defect the extremist group.
The 15-minute footage shows a man named as Abu Abdallah carrying out the punishment.
The terror group is said to be in the midst of a major crackdown on spies operating inside the vast swathes of territory it controls in Iraq.
Abdallah has accused his brother of being a “spy for the US coalition.”
The gruesome killing comes five months after an Islamic State fighter was reported to have killed his own mother, after she tried to leave the area controlled by the group in Syria.
Ali Saqr al-Qasem used an assault rifle to execute his mother Lena, 45, after she was found guilty of apostasy.