A man was hospitalised with a stab injury after reports of a fight on a bus in Harlesden.
Police taped off an area of Park Parade on Friday night (November 3) after they were called to the scene.
Officers were deployed at around 10.30pm but found no trace of a victim or suspects.
A spokesman for Metropolitan Police said: "Police were subsequently called to a north London hospital after a 24-year-old man attended with a stab injury.
"His injuries are not believed to be life-threatening."
Police say no arrests have been made and enquires into the incident continue.
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