A notorious Isis executioner who beheaded hundreds of innocent citizens has been stabbed to death by a hit squad in north west Iraq.

Man mountain Abu Sayyaf was one of the terror group's main executioners and appeared in many of the group's propaganda videos showing brutal decapitations.

2 The barbaric brute was responsible for hundreds of killings

He is the second Isis executioner to be killed in region in the last few days.

Sayyaf was infamous for collecting the heads of his victims and dumping them in the same hole in the region of al-Khasafa.

Iraqi journalist Muhammad Yawar said: "Abu Sayyaf was one of the scariest executioners in Nineveh... He was a reflection of the brutality of this terrorist group.

"He was known for his huge body and heavy arms. He was one of the notorious faces in the Isis propaganda videos."

Related Stories TAKING BACK MOSUL Incredible pictures reveal devastation of Mosul's Nabi Yunus shrine after it was blown up by ISIS jihadists Video 'CUT OFF THEIR HEADS' Fanatic who murdered Muslim shopkeeper calls for beheadings in YouTube message from JAIL ROGUE SEALS US Navy SEALS accused of sickening string of war crimes and fighting over film rights to Osama bin Laden mission BEFORE killing him THE 'NEW JIHADI JOHN' Brit jihadi who acted as Anjem Choudary's bodyguard appears in new ISIS beheading film GOT HIM! ISIS propaganda chief behind sick beheading and child execution videos is wiped out in Mosul air strike Graphic Warning cubs of the caliphate Harrowing ISIS video shows kids as young as 10 BEHEADING and shooting Kurdish prisoners in an abandoned funfair

Local media activist Abdullah al-Mallah revealed a group of unknown assailants ambushed Sayyaf in his car killing him instantly

Another Isis killer accompanying the executioner also died in the attack.

Al-Mallah said: "He [Sayyaf] was found dead in the Dawassah district west of Mosul city in Nineveh Governorate on Sunday evening. The Isis-led Hisba Police was unable to identify the perpetrators."

2 Sayyaf was infamous for collecting the heads of his victims and dumping them in the same hole in the region of al-Khasafa

On Friday we told how another executioner known for killing women was gunned down in western Mosul.

Abu Abdel Rahman was shot by unknown gunmen in al-Askari region and killed on the spot.

Western Mosul has become the new battlefront for Iraqi government forces, who with the help of the US-led coalition force, succeeded in liberating east Mosul a week ago.

ISIS fighters were reported to have redeployed in the western part of the city.

Abu Sayyaf, translated to mean the 'father of swordsmith', is also the name for an Isis branch in the Philippines synonymous with beheadings and kidnappings.