Six teenage boys have been arrested on suspicion of attempted murder after a man was left fighting for his life from an assault outside a block of flats.
Five 16-year-olds and one 15-year-old were today being questioned at a north London police station.
A 19-year-old man was also arrested on suspicion of grievous bodily harm after the incident on the Grahame Park Estate in Barnet on Friday night.
Police said the victim has not yet been formally identified but is believed to be a local man aged in his late teens or early 20s.
He was taken to hospital for treatment for a serious head injury and remains in a critical condition, according to police.
A Scotland Yard spokesman added: "Detectives believe the victim was assaulted outside Mercury Block on the Graham Park Estate.
"Officers from Trident Gang Crime Command are investigating."
Anyone with information is asked to call police on 101 or contact Crimestoppers anonymously on 0800 555 111.
