It comes after British Transport Police and the London Ambulance Service were alerted to an incident at Archway Station shortly after 6.10am on April 25.
The station was temporarily closed whilst the scene was dealt with, reopening a short while later.
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A man was found suffering a stab wound to his leg and was taken to a major trauma centre as a priority.
A spokesperson for the Metropolitan Police has confirmed today (April 26) that the victim did not suffer life threatening injuries.
There has been no confirmation of arrests at this stage.
