ISIS fanatics have threatened to behead Lionel Messi and Cristiano Ronaldo in sickening new posters warning of attacks at the World Cup.

The two superstars are shown in a mocked-up image pinned down on the pitch in a packed stadium with knife-wielding jihadists hacking at their necks.

Above the picture, released on Telegram by a pro-ISIS group, a chilling caption warns 'the ground will be filled with your blood'.

A second poster shows a militant carrying what appears to be an explosive device in to a stadium. It comes with the message: 'Fifa World Cup Russia 2018 - victory will be ours'.

ISIS fanatics have threatened to behead Lionel Messi and Cristiano Ronaldo in sickening new posters warning of attacks at the World Cup

A second poster shows a militant carrying what appears to be an explosive device in to a stadium. It comes with the message: 'Fifa World Cup Russia 2018 - victory will be ours'

It is the latest in a series of online threats made against this summer's showpiece football tournament and Barcelona star Messi has been the target of similar warnings over the last year.

In March, he was shown in a photoshopped image on his knees wearing an orange Guantanamo Bay-style jumpsuit, often seen worn by victims in the terrorists' execution videos.

Messi is depicted inside Moscow's Luzhniki Stadium – one of the World Cup venues - with a masked jihadi to his left and the threat 'so strike them upon the necks and strike from them every fingertips' emblazoned above them.

Previous posters released by ISIS include this image of Lionel Messi behind bars and crying blood

One ISIS poster released earlier this year shows Lionel Messi on his knees wearing an orange Guantanamo Bay-style jumpsuit, often seen worn by victims in the terrorists' execution videos

It comes after another chilling poster shows a terrorist armed with a gun and explosives near a football stadium in Russia along with the words: 'I swear that the Mujahideen's fire will burn you... just you wait'

In October another poster emerged showing the Barcelona star behind bars in an attempt by terror fanatics to spread fear ahead of the the tournament in Russia.

It came after another chilling poster showed a terrorist armed with a gun and explosives near a football stadium in Russia along with the words: 'I swear that the Mujahideen's fire will burn you... just you wait'.

The 2018 FIFA World Cup will be played across 11 cities in Russia from June 14 to July 15, when the final will be played at the Luzhniki Stadium in Moscow.

Tens of thousands of England fans are expected to base themselves in St Petersburg for the month-long finals.

St Petersburg, Russia's second largest city, was the scene of an horrific ISIS attack when a briefcase bomb detonated on the underground in April last year, killing 14 people.

The blast was in retaliation to Russia's airstrikes in Syria that have helped bring the regime to its knees.

Thousands of Russians from mainly central Asia have travelled to the Middle East to fight for ISIS.

Experts in Moscow believe around 2,400 joined the regime in 2015 alone.