Footage from the aftermath of the horrifying daylight attack in Streatham yesterday (Friday) shows one schoolgirl grapple with a knifeman before being dragged away by a friend.
As part of the group tussled in the street, a 16-year-old in school uniform lay bleeding on a nearby pavement as witnesses and passers looked on helplessly and did what they could to stop the bleeding.
The harrowing video, taken by a woman from the first floor of a house just metres from the attack in Amesbury Avenue, later shows one knifeman dragging another man into a nearby property.
One of the schoolgirls rushes over to confront the knife-wielding man and can be heard screaming “what are you doing?” at him.
The knifeman, wearing a blue shirt, then perches up on a wall outside the house where he can be seen tapping a large blade against a wall and looking back towards the stabbed teen.
Throughout the video, the woman filming can be heard describing the attack over the phone to emergency services.
Her voice trembles as she can be heard saying: “It is absolutely terrible, and they’ve got knives.”
“I think one of them has been stabbed.”
London news: Horrifying video has emerged showing the aftermath of a stabbing in Streatham
Some witnesses can be seen calling 999 as others administer first aid to the badly wounded boy.
The young victim was rushed to hospital where police said he was fighting for his life.
Medics later downgraded his injuries to non-life threatening.
Three men have been arrested on suspicion of attempted murder and are in custody at south London police stations, a Metropolitan Police spokeswoman said.
Pupils can be seen wrestling with a knifeman on the far side of the street at the start of the clip
A schoolgirl can be seen grappling with a knifeman before being pulled away by a friend
Officers, paramedics and the London Air Ambulance were scrambled to the scene after receiving reports of a fight shortly after 4.30pm yesterday (June 8).
Two men were arrested near the scene and a gun was also recovered, police said.
The first, 18, was arrested on suspicion of attempted murder and possession of a firearm.
A second man, 19, was arrested near to the scene on suspicion of attempted murder.
A man can later be seen tapping a large knife against a wall further down the road
A 58-year-old man was arrested later on Friday evening also on suspicion of attempted murder.
Detectives from Lambeth are investigating the stabbing.
Any witnesses or anyone with information on the attack is asked to call Lambeth CID via 101 and quote reference 5407June8.