The world’s most wanted man, Jihadi John, has been killed in a U.S. drone strike in Syria

The world’s most wanted man, Jihadi John, is believed to have been killed in a U.S. drone strike in Syria. Pentagon officials say...

The world’s most wanted man, Jihadi John, is believed to have been killed in a U.S. drone strike in Syria.

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 appeared in a string of sickening beheading videos of Western hostages including two British aid workers, was ‘evaporated’ by a missile as he climbed into a car.

Anti-ISIS activists say Emwazi is believed to have been hit near a symbolic clock tower in the city centre where the group has staged a number of horrific public executions, including crucifixions, since capturing the city two years ago.

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.

Bethany Haines, 18, had previously said she would have only have closure ‘once there’s a bullet between his eyes’.

Stuart Henning, the nephew of British aid worker Alan Henning, who was also killed by Emwazi, said he had mixed feelings because he ‘wanted the coward behind the mask to suffer’.

A senior US defence official had earlier 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, ISIS sources in Raqqa are claiming he survived the attack, with eyewitnesses telling Sky News he was taken badly injured to hospital which has been placed in lockdown by the Sunni militants.

He was top of the UK Government’s ‘kill list’ of up to a dozen radicals who ministers want killed in drone strikes and David Cameron today said Britain had been working ‘hand in glove’ with the U.S. to track him down.

The British Prime Minister welcomed reports of the killing which he called an ‘act of self defence’.

He stopped short of confirming that Emwazi – who he branded a ‘barbaric murderer’ – was dead but said the targeted attack was ‘the right thing to do’.

There is a high possibility British spies were operating on the ground in Raqqa to help identify Emwazi before the strike and may now be trying to collect DNA evidence to prove his death.