Pentagon officials say they are ’99 per cent’ sure they have assassinated British Islamic State executioner Mohammed Emwazi in the terror group’s capital of Raqqa.

The 27-year-old from London, who became the face of ISIS in their sickening beheading videos of Western hostages including two British aid workers, was ‘evaporated’ by a missile as he climbed into a vehicle.

A senior US defence official told Fox News: ‘We are 99 per cent sure we got him. We were on him for some time.’ The Kuwaiti-born militant, who moved to the UK when he was six years old, was blown up in a ‘flawless’ and ‘clean hit’, another defence source told ABC News.

However, there is a good chance his death will never be confirmed if his body has been incinerated and spies may have to rely on intercepting chatter from the jihadi militants to verify the reports.

Emwazi is believed to have been hit near a symbolic clock tower where the group has carried out barbaric killings, including crucifixions, since capturing the city two years ago, activists have said. Bethany Haines, 18, the daughter of one of his British victims, David Haines, today told how she felt 'an instant sense of relief' after hearing reports of his death having previously said she would only have closure 'once there's a bullet between his eyes'.

But Stuart Henning, the nephew of British aid worker Alan Henning, who was also butchered by Emwazi, said he had mixed feelings because he had 'wanted the coward behind the mask to suffer'. Read it all here...............