A shocking propaganda video has been released showing mass executions by ISIS thugs in Iraq.

The horrific footage, which is believed to have been released by the terror group today, shows masked jihadists methodically firing into the back of their victims' heads as they kneel in the sand.

Mass graves had already been dug in the sand for the men.

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The men were seen kneeling face down in a trench as masked ISIS thugs methodically executed them

One of the men is seen in the video desperately pleading for his life before he is shot dead.

Many were made to show their ID badges - suggesting they could have been members of the Iraqi army.

The executed men were branded 'kuffar' by the ISIS thugs, meaning traitors.

The men were methodically shot by ISIS killers as they knelt in what looks like a purpose-built trench to the north of Baghdad

The footage, released today on ISIS terrorist channels, was purportedly shot in Northern Baghdad

The sequence of footage - which has been removed by Mail Online - ends with a shot of around 50 men lying dead in a sandy trench.

The men had earlier been seen kneeling blindfolded indoors - including a man wearing a T shirt bearing the England Three Lions football logo.

As they knelt on the ground, their heads bowed, terrorists were filmed hitting them with sticks, and one man wept as he was interrogated.

Terrorists were seen beating the kneeling men with sticks in the horrific video, released today

One blindfolded man wept as he was interrogated by a blindfolded ISIS thug ahead of the mass execution

Other blindfolded men were also quizzed by the terror group before being executed.

The video, released on ISIS terrorist channels, was purportedly filmed in Wilayat North Baghdad.

It is believed to show a mass execution of a group ISIS refers to as 'sahwat' - groups who received assistance from the US to fight against terror group al-Qaeda.

One of the men seen in the video (on the right) was wearing a T shirt carrying the England three lions badge

It is not known when the footage was taken, but the town was liberated from ISIS in 2014.

It could have been taken as ISIS terrorists fled from coalition troops.

The video shows blindfolded men being quizzed by ISIS supporters. A shocking execution sequence followed

A mass grave appears to have been dug before the men were led outside by ISIS killers in Baghdad

The footage emerged on a day when newly-uncovered ISIS documents in Libya revealed that jihadis are offering their brides dowries such as machine guns and suicide vests.

Forces allied with the country's unity government discovered the documents as they searched buildings seized during a battle with the terror group in the coastal city of Sirte.