Metropolitan Police detectives have launched an inquiry after a 17-year-old boy was found stabbed to death at Caldy Walk in Islington.
Police were called to the area shortly after 6pm on Wednesday, 10 June, to report a male had been stabbed.
Paramedics from the London Ambulance Service and London's Air Ambulance attended the scene before he was rushed by land ambulance to an east London hospital where he died a short time later.
Officers believe they know the identity of the deceased but await formal identification and confirmation that next of kin have been informed.
Officers from Islington remain at the scene. The death will be investigated by detectives from the Homicide and Major Crime Command.
A Met statement said: "At this early stage, officers retain an open mind as to any motive. There has been no arrest."
Anyone with information that may assist the investigation should call police via 101 or, to remain anonymous, call Crimestoppers on 0800 555 111.