The Jewish security volunteers first on scene of Golders Green attack

"We got a phone call to the hotline saying that there's a man stabbing people and we sent our members sent to scene."

It was not yet known at the time on Wednesday morning, but a volunteer of the Jewish security group Shomrim was dispatching their members to what would later be formally declared a terrorist incident by the Metropolitan Police.

Two Jewish men, aged 34 and 76, were stabbed while in Golders Green, north London. Both are in a stable condition, but the attacks came after a spate of arson attacks against Jewish property in London in recent weeks.

"We were first on scene, and we apprehended him together with the police," Ben Grossnass adds.

The Met said its officers responded at 11:16 BST on Wednesday after receiving reports that people had been stabbed in Highfield Avenue, which runs off Golders Green Road.

Shomrim carries out civilian security patrols through Jewish communities in north London.

Grossnass described seeing the attacker outside a synagogue on Highfield Avenue and said that he "started stabbing someone outside there".

"Then he went on down Golders Green Road, and he continued stabbing a visibly Jewish man and he went after him, pushed him over and started stabbing him repeatedly.

"What happened was the attack happened at the synagogue first and then he went down Golders Green Road looking for his Jew to stab, to put it brutally. We understand he was alone."

Footage posted on social media after the attack happened late on Wednesday morning, appears to show an older man putting on a kippah as he waits at a bus stop, before the attacker lunges at him.

Local pizza shop worker Tariq Aziz said he helped the elderly stab victim after he saw him bleeding from his neck.

"He came to our shop and then I gave him a tissue and helped him, and then police came suddenly and arrest the guy," Aziz told PA Media adding that the 45-year-old suspect "wasn't running away" following the attack.

Aziz said he pointed him out to police as he was "just walking down there with a knife".

Separate online footage showed the suspect approaching Met Police officers.

One officer Tasers him, sending the suspect to the floor, while shouting at him to drop the knife.

While the suspect is on the floor, the officers is seen to kick the suspect in the head as they try to disarm him.

The man, 45, was then been arrested on suspicion of attempted murder.

"He has a history of serious violence and mental health issues," Met Police Commissioner Sir Mark Rowley said during an update from the scene on Wednesday afternoon.

Despite heckles from a small group of people near to Rowley who were calling for him to resign, the commissioner said the police is doing its best to protect the Jewish community.

Rowley also praised the "extraordinary" actions of the officers and local volunteers who apprehended the man - who remains in custody.