The attack, in which an assailant seemed to have deliberately rammed his van into a crowd of Muslim worshippers near Finsbury Park Mosque in London shortly after midnight, is being treated as a terrorist incident, police said.
Prime Minister Theresa May condemned the incident as "every bit as sickening" as the recent atrocities in London and Manchester.
On the night of the attack, the suspect appeared to wave and blow a kiss to the crowd while looking out at the scene of devastation left in the North London street.
May announced that police will examine the security of mosques and provide any help needed before celebrations marking the end of Ramadan, Islam's holy month. "This is very worrying to the Muslim community".
An eyewitness told how he jumped out of the way of the van as it struck: "He just came into all of us".
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 US prison in January 2015 for his conviction on terrorism-related charges.
A NORTH London imam who defended an attacker who drove a van into people outside a mosque is being hailed as a hero for saving his life.
Emotions are high in the United Kingdom in the wake of a series of deadly terrorist attacks and a fire at a London apartment building that killed dozens.
Locals pinned down the driver and the imam of the Muslim Welfare House stepped in to stop him receiving a mob beating.
Official London Grenfell fire toll at 79, say police
May said after the meeting Saturday that there have been "huge frustrations" in the community as people tried to get information. Scotland Yard is leading the criminal investigation into the fire at Grenfell Tower to establish the exact cause of the fire.
LONDON (CNN) - Authorities and the media faced questions Monday over whether they treated the terror attack on a group of Muslim worshipers in north London in the same way as other, Islamist-inspired incidents.
The mayor of London, Sadiq Khan, called the incident "a truly horrific terrorist attack on our city".
She and other family members said they would not be issuing further statements at this time.
The Muslim Council of Britain said the vehicle hit people as they were leaving the Finsbury Park Mosque, one of Britain's largest. At 4:46 a.m. the Met stated that its Counter Terrorism Command was investigating the incident.
The Department of Homeland Security (DHS) has responded to the attack and said the Secretary of Homeland Security, John Francis Kelly, has been briefed. "Diverse, welcoming, vibrant, compassionate, confident and determined never to give in to hate", she said in her statement. "When I looked back, I thought it was a auto accident, but people were shouting, screaming and I realised this was a man choosing to terrorise people who are praying", he told Reuters.
Resident Cynthia Vanzella said she was in bed when she heard people shouting. "These are the values that define this city", she said later outside Downing Street. "It is a tragic and barbaric terrorist attack".
On June 3, three men had driven a van into pedestrians before embarking on a stabbing spree.
It was the third major incident in the capital this month, after the London Bridge attack and last week's devastating fire in the Grenfell Tower block, in which 79 people are thought to have died. Five people were killed in that attack.
Two weeks earlier, a suicide bomber killed 22 people at a concert by American pop singer Ariana Grande in Manchester in northern England.
Comments