A man has died and eight people have been injured after a van ploughed into pedestrians near a north London mosque.
The van mounted the pavement and struck a group of people just after midnight near Finsbury Park Mosque in Seven Sisters Road. A 48-year-old man has been arrested.
Counter terrorism officers are at the scene, the Metropolitan Police said.
The Muslim Council of Britain (MCB) said a van “intentionally” ran over worshippers.
Many of the victims are believed to have just left evening prayers after breaking the Ramadan fast.
The MCB said it was a “violent manifestation of Islamophbia” and called for extra security around mosques.
Prime Minister Theresa May will chair an emergency meeting later and said police were treating it “as a potential terrorist attack”.
She described it as a “terrible incident”, adding: “All my thoughts are with those who have been injured, their loved ones and the emergency services on the scene.”
The van driver was arrested after being detained by members of the public at the scene following the collision at 00:20 BST.
Abdulrahman Saleh Alamoudi said he was among a group of people helping an elderly worshipper who had fallen down when the van swerved towards them.
Video posted online of the aftermath showed a scene of chaos as people tried to help the injured.
One man could be seen giving CPR to a victim in the street while another man’s head injury was treated with a makeshift dressing, reports the BBC.