Police were called at 6.26pm on Wednesday, 20 October to report that a teenage boy was found injured in Charter Avenue, Ilford.
Enquiries into the circumstances are ongoing. At this early stage of the investigation, no arrests have been made.
Anyone with information is asked to call police on 101 or tweet @MetCC quoting CAD 6328/20Oct. To remain anonymous contact Crimestoppers on 0800 555 111.