A major road next to Finsbury Park train and bus stations was closed by police due to a stabbing.
A Metropolitan Police patrol car and police tape were seen outside the station at 7am on Friday with Stroud Green Road closed at the junction with Seven Sisters Road.
The closure followed a stabbing outside Finsbury Park station on Thursday night. A man in his 30s who was knifed remains in hospital.
Traffic is now queuing from Manor House and Hornsey Road after the closure of Stroud Green Road between Seven Sisters Road and Woodstock Road.
Buses 4,19, 106, 153 and 236 are diverting, the BBC has reported.
The whole of Finsbury Park station was cordoned off at 6am on Friday, but it is now open.
Meanwhile, a number of Tube lines have also been hit with suspensions and delays.