A 47-year-man has been arrested on suspicion of terrorism offences after allegedly ploughing a van into a group of worshippers leaving a mosque in Finsbury Park, North London.

The man was arrested on suspicion of attempted murder at the scene following the attack just after midnight on Seven Sisters Road outside the Muslim Welfare House which killed one and injured nine.

Scotland Yard released a statement saying the man has now been additionally arrested on suspicion of offences of murder and the commission, preparation or instigation of terrorism.

Deputy Assistant Commissioner Neil Basu says: "This is being treated as a terrorist incident and is being investigated by the Counter Terrorism Command.

"All the victims were from the Muslim community and we will be deploying extra police patrols to reassure the public, especially those observing Ramadan.

"We are working hard to protect all communities and the public will see additional officers patrolling across the city and at Muslim places of worship. This was an attack on London and all Londoners. We should all stand together against extremists whatever their cause."

They also confirmed they were carrying out searches at a residential address in the Cardiff area in connection with the attack.

The alleged victims are believed to have been leaving the mosque after attending prayers and eating their evening iftar meal to break their fast for Ramadan.

Finsbury Park attack Show all 14 1 /14 Finsbury Park attack Finsbury Park attack Police officers attend to the scene after a vehicle collided with pedestrians in the Finsbury Park, killing one person and injuring eight Reuters Finsbury Park attack The incident is being treated as a potential terror attack Reuters Finsbury Park attack A man has been arrested on suspicion of attempted murder Reuters Finsbury Park attack Police cordon off a street in Finsbury Park AFP/Getty Images Finsbury Park attack A man prays in the street after the attack Reuters Finsbury Park attack Men gather and pray together in the street in the aftermath of the attack AFP/Getty Finsbury Park attack Reuters Finsbury Park attack PA Finsbury Park attack Onlookers gather near a police cordon EPA Finsbury Park attack Forensic investigators arrive at the scene PA Finsbury Park attack A forensic tent stands next to a van PA Finsbury Park attack A police officer talks with residents AFP/Getty Images Finsbury Park attack Onlookers watch proceedings at the security cordon AFP/Getty Finsbury Park attack Local residents react at the scene AFP/Getty Images

The man who died is believed to have collapsed and was being attended to by other worshippers when they were attacked.

He was pronounced dead at the scene at around 1am. Police say inquiries are continuing to establish whether his death was a direct result of the attack.

The attack happened just days after worshippers at the mosque where warned about the increased risk of hate crime against during their holy month.