WHATS NOW ? SASA HIVI HALI IN LONDON IMEKUWA YA HATARE'' EEE MUNGU TUEPUSHIE'' A MAN SLASHED IN THE THROAT BY A TERRORIST INE LEYTONSTONE UNDERGROUND LONDON''

A man slashed in the throat by a terrorist in Leytonstone Underground has spoken of how he had to be 'dragged off' the attacker even as he bled from the neck - while other members of the public just 'stood around' filming on their mobile phones.

David Pethers, 33, a father-of-one from east London, was left bleeding after the 29-year-old cut him in the neck with a Stanley knife during the confrontation.

'I was dragged away, I was bleeding from the neck. I know it sounds crazy, but I went back to have another go,' he told MailOnline.

Injured: David Pethers, a 33-year-old lift engineer, was cut in the neck during the grapple with the knifeman''

This is the man Mr Pethers found lying on the floor in a pool of blood moments before his confrontation with the knifeman at Leytonstone tube station''

The man was filmed by a shocked bystander as he waved his knife (circled), before being Tasered by police

Mr Pethers found himself at the centre of the standoff after walking down the station steps to see the knifeman's first victim, a 56-year-old musician, lying on the floor in a pool of blood. 

He said: 'It's just a cut on my neck, it wasn't too deep or too serious really.

'I was walking down into the station, as I got to the ticket office there was a pool of blood on the floor and a guy with a knife going mad.

'He was saying something about Syria. To be honest he just looked crazy, he just had a crazy look in his eye.

'Basically the scene I walked into was the guy lying on the floor, blood everywhere, and [there was] this guy shouting and that's when I tried to get everyone out of the station.'

It was then that the hero's instincts kicked in and he and another man tried to stop the knifeman attacking the children and women cowering nearby.

Mr Pethers said: 'There was a guy with a rucksack saying: "Calm down, lets talk about this" and I saw this guy was going to go for him.

'Basically we kind of contained him in the main ticket area. He kind of went for me and I went for him and he cut my neck. 

'Then the police turned up. They fired four tasers and then they contained the situation from there.'

Mr Pethers said that contrary to earlier reports, the man was not armed with a machete, but had a Stanley knife style box cutter.

'It was like a box cutter but a really cheap one with an extendable three or four inch blade.'

Taser

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While on the ground, he appears to be given a second round of electricity, after which he dropped his knife

However, Mr Pethers was left furious with other bystanders. He told MailOnline many men simply stood by filming the incident rather than helping stop the man.

Meanwhile, dramatic footage has shown moment the attacker was Tasered by police after seriously injuring a 56-year-old man - who Mr Pethers saw when he entered the station.

In the wake of the incident, British Transport Police confirmed extra officers would be deployed to rail and tube stations.

In the footage, a bystander can be heard shouting 'you ain't no Muslim bruv' at the attacker - a defiant rallying cry which has now begun trending on social media.

Police were today searching an east London property in connection with the incident, while the suspect remained in custody and was being questioned by police.

Police officers arrived at the scene soon after it was reported there had been a stabbing - there they were confronted by a man armed with a knife said to be several inches long.

In their first attempt to Taser him, the officers fail. But when they try a second time, he collapses to the ground, incapacitated.

Still clutching the knife, he then appears to be given another round of electricity and the weapon falls from his hand. He is then turned over, handcuffed and arrested.

It's then a defiant onlooker shouted back to him: 'You ain't no Muslim bruv.' Another called out: 'Drop it, you fool.'

Others can be heard expressing shock. One says: ''F*** he's been tasered! About six times!'

Scotland Yard has now confirmed anti-terror police are investigating after eyewitnesses claimed they could hear the man shout 'this is for Syria' and 'all of your blood will be spilled' during the frightening ordeal. 

This morning Britons took to Twitter to show their contempt for the suspected terror attacker - sending the hashtag £YouAintNoMuslimBruv trending.

The phrase has been widely picked up by social media users who say it is the perfect British riposte to attempts to spread violence and terror in London - disowning and sidelining the attacker.

The hashtag is now trending on Twitter. 

NIMECHOTA NA KUMIMINA KUTOKA DM 'ILI MJIONEE HABARI MBALI MBALI ZA UK HASA LONDON ANAPO ISHI MBUTA NANGA''