Detective Chief Inspector Paul Waller, who is leading the murder investigation, said: “Three people are in custody and specialists from across the Met have been working at pace since last night to establish exactly what happened.
Superintendent Annmarie Cowley, one of the senior officers responsible for policing Islington, said: “I know this death will cause shock and very real concern in Holloway and the wider Islington area.
Officers were called to Seven Sisters Road, in Islington, at around 11.35pm on Thursday and attended alongside the London Ambulance Service, the Metropolitan Police said.
Three teenage girls aged 14, 16 and 17 were arrested on suspicion of grievous bodily harm (GBH) prior to the man’s death.
A murder investigation has been launched and three teenage girls have been arrested after a 75-year-old man died in north London.
