“He’s just killed him, hurry up!” a man says in the video.

As the victim struggles weakly to get away, the attacker raises what appears to be a small knife in the air screams something unintelligible in a foreign language.

“Get off him ya f**kin rat!” a woman yells.

The attacker then takes the knife to the man’s throat in front of the horrified witnesses as the victim groans.

The shocking incident unfolded on Monday. Picture: @TRobinsonNewEra/X
“He’s trying to cut his head off! Hurry up! He’s slicing his head off!” the man says.

Bystanders rush in and attempt to overpower the attacker, with one yelling “kill him!”

The sound of something metal can be heard hitting the ground as another local rushes in and begins whacking the offender in the head with a hurling stick.

The attacker falls to the ground but refuses to release the victim from the headlock.

Another bystander kicks the offender in the head before police arrive at the scene and rush into the commotion.

‘He’s trying to cut his head off!’ Picture: @TRobinsonNewEra/X
The Police Service of Northern Ireland confirmed one man was in custody.

“Police in north Belfast are currently in attendance at Kinnaird Avenue following the report of a stabbing incident shortly after 10.30pm on Monday June 8,” police said in a statement.

“A man has been arrested in relation to the incident and is in police custody while a second man has been taken to hospital with serious injuries.”

Officers will remain at the crime scene and have asked for witnesses or anyone with dashcam or CCTV footage of the incident to come forward.

The victim was left with ‘serious injuries’. Picture: @TRobinsonNewEra/X
Right-wing firebrand Tommy Robinson shared the video on X where it has been viewed nearly half a million times, writing, “Horrific scenes in North Belfast tonight as an invader was caught trying to behead a man in the middle of the street!”

Police are yet to announce any charges and have not released the name or immigration status of the alleged offender.

The shocking attack comes in the wake of the brutal stabbing murder of 18-year-old student Henry Nowak by Sikh man Vickrum Digwa in the southern city of Southampton last December.

A bystander rushes in with a hurling stick. Picture: @TRobinsonNewEra/X
Digwa, 23, was jailed for life with a minimum of 21 years after he was found guilty late last month following a two-week trial in Southampton Crown Court.

Harrowing bodycam footage released last week showed Hampshire Police officers arresting and handcuffing the teen as he bled to death, after the killer and his family members falsely accused the student of a racially motivated attack.

The footage sparked violent riots in Southampton on Tuesday that left 11 police officers injured, and fuelled fierce debate over alleged “two-tier policing” in the UK that critics claim favours ethnic minorities over white people.

Fourteen people have since been charged with violent disorder.

Protesters march in Southampton. Picture: Finnbarr Webster/Getty Images
The high-profile case has sparked a diplomatic row between the UK’s left-wing Labour government and the Trump administration in the US.

“Henry Nowak died the same way a civilization dies: abandoned, handcuffed by authorities who neither trusted nor cared for him, and accused of hate crimes he did not commit,” Vice President JD Vance wrote on X over the weekend.

“His murder is as tragic as it is enraging. He should still be alive today, and he would be if the last few generations of European elites had stood their ground against the politics of self-hatred and the mass invasion of migrants, many of whom despise the West and the people who love it.

“Henry was far from the first to so needlessly lose his life, and I fear he won’t be the last. Each time a life like his is lost, the proper response – the only response – is righteous anger.

“One of the most important things the Trump administration has proven to the world is that stopping the flow of mass migration and defending national sovereignty is a matter of political will and leadership. Anything else is an excuse.”

A spokesman for UK Prime Minister Keir Starmer hit back at “people trying to interfere in our democracy and seeking to stir up division”.

The Downing Street spokesman added that the Nowak family has “said they do not want his death to be used to create further division”.

“Our politics should bring people together even in the most terrible of circumstances,” the statement said. “That is who we are as a country.”