"This big van just came and went all over us", witness Abdulrahman Saleh Alamoudi told BuzzFeed News. "He was screaming. "I'm going to kill all Muslims". "Our prayers are with the victims".
Police said in a statement that there were "a number of casualties", and added that they were called to reports of "a vehicle in collision with pedestrians" at 00:20 am (4.50 am IST).
But police said no other suspects at the scene have been identified or reported to police at this early stage of this investigation.
Eight of those who were injured were taken to three separate hospitals in the area and two people were treated at the scene for minor injuries.
London police have declared the crash a major incident and closed the area to normal traffic.
The leader of the opposition Labour Party, Jeremy Corbyn, in whose constituency the attack took place, said he was "totally shocked".
On June 3, a van drove into a crowd of people walking on the London Bridge, followed by knife attacks, leaving eight dead and many wounded.
Islington's Seven Sisters Road, where the incident took place, is home to at least four mosques, and would have likely been filled with worshipers leaving late-night taraweeh prayers and heading back toward the Finsbury Park Underground Station.
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Police say the driver of a van that hit pedestrians on a London road is a 48-year-old man who has been arrested and taken to a hospital.
"Like the bad attacks in Manchester, Westminster and London Bridge it is also an assault on all our shared values of tolerance, freedom and respect", he said in a statement. He complained that the "mainstream media" was unwilling to call the attack a terrorist incident for many hours. It is unclear whether this was the same person in custody or another person in the van who may have fled the scene.
But another witness at the scene said the attacker did not say anything.
She added: "I saw a lot of people injured. It appears from eyewitness accounts that the perpetrator was motivated by Islamophobia", he said.
The Muslim Council of Britain (MCB) said a van "intentionally" ran over worshippers.
"Basically, a van swerved into them deliberately", Versi told Reuters, citing a witness.
He said the driver had run out of the van but a group of people caught him and held him until police arrived.
On May 22, a suicide bomber blew himself up outside a pop concert in Manchester, killing 22 people.
She was also criticized for keeping her distance from angry residents during her visit to the charred remains of the 24-storey Grenfell Tower. She said on Saturday the response to the fire had been "not good enough". It has not been associated with radical views for more than a decade. He got arrested by five or six police officers.