Four men have been arrested on suspicion of attempted murder after a 15-year-old boy was stabbed in north London.

The victim was found lying in the road in a critical condition after being stabbed several times on the Broadwater Farm estate in Tottenham at around 11.14am on Friday.

He remains in a critical condition in hospital.

Officers believe the teenager was involved in an altercation shortly before he was stabbed on Willan Road, possibly by a suspect riding a bicycle.

On Friday, two men in their early 20s and a 17-year-old boy were arrested on suspicion of attempted murder, Scotland Yard said.

On Saturday, another man in his early 20s was also detained.

Police are urging members of the public who gave first aid to the victim at the scene to come forward.

Image: Police were called to the scene on the Broadwater Farm estate

Detective Inspector Paul Ridley, of North Area CID, said: "I am keen to hear from anyone who either witnessed, or has information concerning this attack.

"The victim, not yet 16 years old, sustained multiple stab wounds and is fighting for his life.

"If you know anything about the circumstances surrounding the incident or if you witnessed it, please do come forward.

"I would also appeal to the members of the public who valiantly administered crucial first aid to the victim to come forward to my investigation team."

Anyone with information is asked to call police on 101 quoting incident number 2902/30AUG or call Crimestoppers anonymously on 0800 555 111.