ISIS's notorious executioner Jihadi John has reportedly fled the jihadi group and is on the run in war-torn Syria and may have joined another jihadi group.

Mohammed Emwazi, a British Kuwaiti computer science graduate turned murderer, is believed to have left the jihadi group after becoming fearful he might be killed by ISIS's chiefs.

The British jihadi has not been seen in a propaganda video for nearly six months after the horrific beheading of Japanese photojournalist Kenji Goto.

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Brutal killer: Mohammed Emwazi, 26, is rumoured to have left ISIS and may have joined another jihadi group

Student to Jihadi: Emwazi lived in Queens Park, London, and studied at Westminster University

Questions over Emwazi's whereabouts have developed following his sudden disappearance from the spotlight in late January.

It is thought that the media pressure associated with being the masked executioner and the publicity surrounding his real identity may have led to Emwazi's surprise decision to leave ISIS.

Possibly reasons for his decision to leave may be linked to his concerns that British and American special forces are thought to be carrying out covert operations in Syria and Iraq.

Emwazi has long been considered a high value target and was the standout figure in ISIS's brutal media strategy to terrify both the world.

Now ISIS chiefs are thought to have decided that Emwazi has become dispensable and no longer a necessary player in the jihadi group, a 'source' told the Mirror.

Nick Kaderbhai, research fellow at the ICSR, questioned the alleged departure of Jihadi John from ISIS, commenting: 'This isn’t the first of these stories to emerge; in the last few months he has said to have fled to Syria, Turkey and Libya.'

Speaking to MailOnline, Mr Kaderbhai said it 'does not make sense to think that they would ‘drop him like a stone’ – it’s not like he’s a captured Westerner who has lost propaganda value.

'If anything, the less he is featured, the more impact he will have.'

Kaderbhai also said claims that Jihadi John feared for his life 'doesn’t fit the profile of the committed salafi-jihadist.'

'They tend to embrace their identity wholeheartedly and claim not to fear death,' he said.

Regarding Jihadi John's disappearance from the endless ISIS propaganda video, Mr Kaderbhai suggested it may indicate that ISIS have 'nothing high profile to show off.'

Mohammed Emwazi is believed to be one of four British jihadis who tortured and interrogated hostages in Syria

Lined up to be executed on a beach in Libya, 21 Egyptian Christians were beheaded by ISIS in Libya. The horrific video was led with a message from an American accented jihadi, who mimicked the role of Jihadi John

Mystery American: Acting in the same role as Jihadi John, an American sounding jihadi appeared in ISIS' lengthy video 'Flames of War'

The news comes after rumours that Jihadi John had been moved by ISIS to Libya, where he supposedly attended a terror training camp with Sousse gunman Seifeddine Rezgui.

Mohammed Emwazi, who changed his name via deed poll, has not appeared in an actual ISIS propaganda video since Japanese journalist Kenji Goto was executed.

The one minute video was released on 31 January and showed Emwazi issuing a message directly to the Japanese government before beheading the 47-year-old photojournalist.

He had previously been seen beheading American journalists James Foley and Steven Sotloff as well as murdering aidworkers Alan Henning, David Haines and Peter Kassig.

Wrongly accused: British rapper Abdel Majeed Abdel Bary, also known by his stage name L Jinny, was initially suspected of being Jihadi John when the first execution video was release last August

Mysterious: A social media appeared last month under the name L Jinnay, sparking rumours that the Maidi Vale grime artist may be living in Turkey

Since he was unmasked on 26 February, little has been seen of the brutal jihadi, sparking rumours about his current whereabouts or possible death.

Another masked executioner, dressed in a familiar all-black robe has since featured in several Libyan ISIS propaganda videos.

With his distinct American-sounding accent, the executioner has been shown carrying out group executions of Egyptian, Eritrean and Ethiopian Christian hostages in Libya.