One witness described being surrounded by bodies in the wake of the attack outside the Muslim Welfare House, close to Finsbury Park mosque.
Police confirmed the incident occurred as worshippers were leaving the Finsbury Park Mosque and counter-terrorism officers are investigating the incident
Another said the attacker shouted about killing Muslims as he was held by local people.
The Metropolitan Police said in a statement: “One man was pronounced dead at the scene.
“Officers are in the process of informing next of kin. A post mortem examination will be scheduled due course.
“Eight people injured were taken to three separate hospitals; two people were treated at the scene for minor injuries.”
Emergency services responding to the scene near the Mosque in Finsbury Park, north London