This video shows the dramatic moment an attempted murder suspect was tasered and bundled into a police van by 20 officers following a tense stand-off in east London during which he allegedly shouted: 'I am your king.'

Before tasering him and knocking him to the ground, police are shown spraying the man with CS gas - which has no effect.

After firing the taser, they rush to surround the man, who has dropped his weapon, and appear to secure him to a stretcher while he shouts.

Neighbours in the Hackney street, alerted by the noise, rush out of their homes and express concern for the man, demanding to know what has happened.

The video was filmed from a balcony overlooking De Beauvoir Crescent by a neighbour who has asked not to be named. It appears to show the man confronting police with a weapon.

"Three police came running up and then this guy came," he told the Standard. "It looked like he was chasing them, not the other way around.

"He was holding this object - it looked like it might be a knife - in his hand. They seemed to be afraid of it whatever it was.

"Then more police cars arrived. They came running up from the road and they were shouting: 'Drop it! Put it down!'"

The video shows officers shouting the word "taser" before deploying the weapon. After a moment the man, who is being restrained, starts shouting.

"It sounded like he was saying, 'I am your king'," the witness told the Standard.

The drama unfolded yesterday at about 4.30pm after police were flagged down and told a man was trying to break in to a house.

Scotland Yard said police "challenged" a man, who jumped down from a first-floor window and ran away.

Police gave chase - but moments later the man turned around and began wielding a "metal implement" at them.

"Officers withdrew and deployed CS spray to detain him but this had no effect on the man," the Met said today.

"Subsequently a taser was deployed by an officer and the man was detained and arrested on suspicion of attempted burglary and attempted murder."

The man, 26, was taken to hospital but later discharged. He is now under arrest at a north London police station.

No police were seriously injured in the incident, a Scotland Yard spokesman said.

The witness added: "It's good the way the police handled it without injuring him."