One man has died and at least 10 were injured, two “very seriously”, after a vehicle was driven into Muslim worshippers in north London, in an attack police are treating as a terrorist incident.The councils secretary general Harun Khan said he expected authorities to step up security “as a matter of urgency”, adding many would feel “terrorised” following the incident.London’s Metropolitan police labelled the incident a “terrorist attack”, as did Prime Minister Theresa May, who was woken up to be informed of the event.Police said one man was pronounced dead at the scene and the van driver, aged 48, had been detained by members of the public before being arrested.- Two people were treated at the scene, May said, and eight others have been taken to three hospitals.London’ police force have declined to explain why the person charged with attempted murder in the attack on pedestrians outside the Finsbury Park mosque was not immediately charged in connection with a man who died at the scene.Police said another man died at the scene, although he was receiving first aid at the time and it wasn’t clear if he died as a result of the attack or of something else.”He explained to me that the man was very violent, aggressive, and he came over him until the police arrival – but there were other people helping him because the crowd was extremely angry, unhappy, so some people started acting violently too”.The attack happened near the Finsbury Park Mosque in the early hours of Monday morning.The Finsbury Park Mosque gained notoriety more than a decade ago for sermons by radical cleric Abu Hamza al-Masri, who was sentenced to life in a United States prison in January 2015 for his conviction on terrorism-related charges.-The Finsbury Park Mosque “condemns in the strongest terms” a “heinous terrorist attack” early Monday, according to a statement released by the mosque.The chairman of the Finsbury Park Mosque, Mohammed Kozbar, says the incident was a “cowardly attack” on worshippers. Basu said it was a “challenging” time for London and that the emergency services were stretched.”We saw lots of people shouting and lots of people injured“, David Robinson, 41, who arrived just after the accident, told AFP.All the victims were Muslim, several are “seriously injured” and there are now no-other suspects, he added.Britain’s terrorist alert is set at “severe”, meaning an attack is highly likely, Sky News reported.Images of the van showed it was rented from Pontyclun Van Hire in Pontyclun, near Cardiff.Transportation officials said roads were being closed in the area.He said he was “shocked by this horrific attack”, and signalled solidarity with the Muslim community by announcing that he would be attending prayers at Finsbury Park mosque later Monday with Islington council leader Richard Watts.Eight people were killed and 50 injured on June 3 when three Islamist militants drove into pedestrians on London Bridge and stabbed people at nearby restaurants and bars.Witnesses said the road was “backed up” with police cars, ambulance and fire engines.BREAKING: We have been informed that a van has run over worshippers as they left #FinsburyPark Mosque. Earlier, she chaired an emergency meeting of Cabinet members, police and security personnel, the Downing Street press office tells CNN.Muslim leaders in London are appealing for calm after a van was driven deliberately into a crowd of worshippers leaving evening prayers at a mosque. “All of our efforts should be towards getting justice for the victims and ensuring our community stays the diverse, tolerant and welcome place we know it to be”.One of those, Adil Rana, 24, said: “The driver jumped out and then he was pinned down to the floor and people were punching him and beating him, which was reasonable because of what he’s done”.The attack on Monday hits a community already feeling targeted in the fallout from the London Bridge killings and other attacks blamed on Islamic extremists. “Whoever did this, he did it to hurt people and it’s a terrorist attack”.