A teenager is currently fighting for his life in hospital after being stabbed in Balham.
The 18-year-old was found with a stab wound on Balham Hill, not too far from Clapham South station, at about 6pm yesterday (Wednesday 20 March).
He was flown by London's Air Ambulance to a West London Hospital.
The Metropolitan Police have said his condition is understood to be life-threatening.
Detectives have cordoned off the area and are gathering evidence at the scene.
No arrests have been made at this stage.
Anyone who witnessed this incident or has information is asked to call South West Command Unit on 101 quoting CAD6174/20MAR, tweet @MetCC or call Crimestoppers anonymously on 0800 555 111.
Photo: Forensic officers work at the scene of the stabbing in Balham Hill, Wandsworth