Met Police said a number of males have been detained. The victim, who is 19-years-old is reportedly in a life threatening condition.
Police were called to Feldman Close, N16, at 8.14pm.
The London’s Air Ambulance was at the scene supporting the London Ambulance Service.
A crime scene is currently in place.
Police isued an appeal for witnesses/people with information to call 101 quoting: CAD 7398/20OCT.