A murder suspect remains in hospital after a 14-year-old boy was killed and four others were injured in a stabbing in east London.
A 36-year-old man was tasered and arrested in Hainault on Tuesday morning, then taken to hospital, after sustaining injuries when his van hit a house.
Four other people were injured in the attack 鈥 two Met officers who suffered wounds that require surgery, but are not life-threatening, and two members of the public whose injuries are also not thought to be life-threatening.
She came close to losing her hand in the attack, he told host Nick Ferrari, while a male colleague also suffered serious injuries to his hand.
Speaking about the young victim who died, he said: 鈥淭he first thing you have to say is for the parents involved, who鈥檝e lost their 14-year-old, and that is just horrific, and it鈥檚 everyone鈥檚 worst nightmare.
鈥淚鈥檓 sure we鈥檙e all thinking about them.鈥
Chief Superintendent Stuart Bell, of the Metropolitan Police, said he did not believe it was a targeted attack, and it is not believed to be terror-related.
The sword-wielding suspect was tasered and arrested at the scene but has not yet been interviewed because of his injuries, the Met said.
The video shows how officers shout at the suspect, saying 鈥淒on鈥檛 move, don鈥檛 f* move鈥 after he is brought to the ground by three separate taser discharges.
The words 鈥渟uspect contained鈥 are eventually heard as a female officer pulls the sword away from the attacker.
A Buckingham Palace spokesman said the King鈥檚 鈥渢houghts and prayers are with all those affected鈥 by the 鈥渉orrific鈥 stabbings, adding: 鈥淚n particular, the family of the young victim who has lost his life.鈥
The force was initially called to reports of a vehicle being driven into a house.
Metropolitan Police Assistant Commissioner Louisa Rolfe said there has been speculation about the suspect鈥檚 background, including police contact with him, and 鈥渄espite urgent and extensive checks today, we have found no trace of a prior incident involving him so far, but we will of course continue to make those inquiries鈥.
James Fernando, 39, said the suspect had asked one of his neighbours to 鈥渢ake the telephone from him to tell whoever was on the phone his location鈥.
He told PA: 鈥淲ithin two seconds after that she鈥檚 realised something isn鈥檛 right, started running and he鈥檚 pulled a samurai sword from the back of his trouser.
鈥淪he鈥檚 shouted to the other neighbour 鈥 a Nigerian boy who was on his way to school.
鈥淚t鈥檚 quite traumatising now. I can鈥檛 stop envisioning the boy鈥檚 face.鈥
Speaking about what he saw of the suspect, Mr Fernando said: 鈥淗e was running around, still after the police officers came, with the sword in his hand looking for victims.鈥
Another witness, who asked not to be named, told PA he heard shrieks and screams following the incident.
He said he saw a man dressed in yellow jumping over fences from his back window and heard someone shout 鈥淗e鈥檚 got a massive knife鈥.
His words follow footage shared on social media of a man in the area dressed in a yellow hooded jumper brandishing a large knife in his right hand.
Officers could be heard yelling 鈥淐ome here鈥, 鈥淐ome this way鈥 and 鈥淒rop the sword鈥 at the suspect, who could be seen climbing on top of an outbuilding and dropping into a garden.
Prime Minister Rishi Sunak described the incident as 鈥渟hocking鈥, adding: 鈥淪uch violence has no place on our streets鈥.
Footage seen by PA shows a man in a yellow jumper chasing after an ambulance while holding a sword as a body lies motionless on the ground.
The home security video shows an ambulance parked next to the body lying on the road in Laing Close before the ambulance quickly drives away from the scene and the man runs after it, shouting.
In another video clip, sent by an anonymous resident, a police car arrives before the man verbally confronts the police and shouts 鈥淚s there anybody here who believes in God?鈥 while standing next to the motionless body.
A voice is heard shouting 鈥淒rop the sword鈥 before a police officer approaches the man and sprays a substance in his direction before he retreats.
