Emergency services have been called to Seven Sisters Road, near the junction of Holloway Road, today (February 27) at 11.35pm.
At the scene, a man believed to be in his 70s was taken to hospital.
He remains there in a critical condition and his next of kin have been informed, the Metropolitan Police said.
Three teenage girls – aged 14, 16 and 17 – were arrested on suspicion of grievous bodily harm and all remain in custody.
The Met says that enquires into the circumstances are ongoing.
This morning (February 28) a cordon was in place near to the Nationwide branch in Seven Sisters Road, with officers at the scene.
A short distance away, a separate cordon was in place today at Holloway Road near the Moonlight Supermarket, with several police cars and ambulances at the scene.
Anyone with information about the Seven Sisters Road alleged assault is asked to call police on 101 or contact @MetCC on X quoting CAD8184/27FEB25.
Alternatively contact Crimestoppers anonymously on 0800 555 111.
