Police were called at approximately 5.43pm on Wednesday 13 October to a report of a stabbing around Hertford Road, Enfield, EN3.
Officers attended the scene, along with colleagues from the London Ambulance Service and treated a 16-year-old for a stab wound to the back. He was taken to the hospital for treatment. His condition is unknown at this time.
A male was later arrested nearby. Crime scenes remain in place. Enquiries continue.
Anyone with information is asked to call 101 or tweet @MetCC quoting CAD 5897/13Oct.
Information can also be provided to Crimestoppers, anonymously, by calling 0800 555 111.