Police are investigating a stabbing in the area of the Churchill Gardens Estate in Pimlico South West London.
Police and paramedics were called at around 6.12pm on Saturday evening.
A 15-year-old boy was treated at the scene and taken to hospital his condition is not thought to be life-threatening or life-changing. A crime scene cordon remains in place.
No arrest have been made and an appeal and investigation have been launched.
Any witnesses are asked to the call 101 ref 5929/06feb or to contact Crimestoppers.