A 14-year-old boy has been charged with attempted murder after another boy, also 14, was stabbed in south London, police said.
Officers were called to Dressington Avenue, near Catford, on Monday evening, where they found the teenage victim with serious injuries.
Youth workers who were nearby at the time of the incident rushed to the teenager to give him emergency first aid before the London Ambulance Service arrived on the scene.
The victim was taken to a south London hospital where he remains in a critical but stable condition.
The Metropolitan Police said the suspect will be appearing at Bromley Youth Court on Thursday morning.
Two other boys, aged 14 and 15, were arrested but later released on bail pending further inquiries.