The incident occured at Highams Park last night amid reports of a 18-year-old man being hospitalised due to the attack.
Emergency services are currently dealing with the incident, although the police have stated the man is not in a life threatening condition.
There is no London Overground service between hackney Downs to Chingford and Edmonton Greent to Cheshunt.
The delays are expected to last until 3.30pm today.
A Network Rail statement read: “The emergency services are currently dealing with an incident near Highams Park.
“Trains between London Liverpool Street and Chingford/Cheshunt may be cancelled, delayed or revised.”
More to follow…
