Police have characterized the attack, which came as worshippers were leaving mosques after prayers marking the holy month of Ramadan, as a terrorist attack directed at Muslims.
Police said initially said it was unclear if the victim, 51-year-old Makram Ali, had been killed in the incident or had died of other causes.
The man arrested after a van ploughed into worshippers close to the Finsbury Park Mosque here on Monday was charged Friday with terrorism-related murder and attempted murder.
The suspect, who is jobless and of no fixed address, appeared at Westminster Magistrates Court sporting a bruised left eye.
On Thursday, they said the preliminary findings of a post mortem had concluded he died of multiple injuries.More news: It's been a learning experience to bowl on English wickets, says Bumrah
More news: Baby still stuck in borewell
More news: Weather forecast: Moisture begins to build Sunday and into next week
A 13-year-old schoolboy has been reported to the United Kingdom government's controversial anti-extremism prevent programme for celebrating the van attack on a north London mosque last week and describing it as "wonderful news".
Osborne was wearing a white T-shirt and grey jogging trousers, and appeared to have a bruised face. He had moved from Bangladesh at the age of 10. He was married with four daughters and two sons, and had two grandchildren.
Tributes have been left at the scene with messages of solidarity and support for the Muslim community following the attack, while a candle lit vigil was held outside the mosque on Monday evening.
Mr Ali's devastated family said: "Our father was a quiet gentle man".