He added: "We prepare for Ramadan, we prepare for Eid, we have a party together, and mosque does a party for the community, but this year will be different.This year will be different with sadness and caution".
"It is a reminder that terrorism, extremism and hatred take many forms; and our determination to tackle them must be the same whoever is responsible", May said in a statement at DOWNING STREET after chairing a meeting of the government's emergency Cobra committee.
She said: "It's a awful, bad shock".
At around 3 a.m. a London police spokesman told CNN it was "too early" to say if it was a terrorist attack.
Ivanka Trump called for building bridges with people of different faiths in the wake of the attack at a north London mosque.
A 47-year-old man who was arrested over the Finsbury Park attack has been further arrested on suspicion of the commission, preparation or instigation of terrorism including murder and attempted murder, Scotland Yard said.
The interior minister, Amber Rudd, said police "immediately" treated the incident as a suspected terrorist attack.
The media was also criticized for being slow to call the incident a terror attack.
In a telephone interview with ITV News, Osborne's mother described him as a "complex" person but said "that's all I can say". The firm has said it was "shocked and saddened" at the tragedy. One tweet showed a collage of British tabloid headlines, all referring to Muslims in different negative ways.
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"From the window, I started hearing a lot of yelling and screeching, a lot of chaos outside..." Someone was lying under his van shouting "Help me".
Eyewitness Khalid Amin told BBC television that the van turned deliberately left and "just hit the people".
Mohammed Mahmoud explained that they managed to pin down the suspect and keep him safe until police arrived.
Abdikadir Warfa said the van turned into an alleyway and hit a number of people before coming to a stop.
I'm going to kill all Muslims!strong>.
The UK's largest Muslim umbrella body, the Muslim Council of Britain (MCB), said on Twitter that the crash happened outside the Muslim Welfare House, just down the road from Finsbury Park Mosque. "My prayers are with the victims and their families", read the statement.
British police said the incident was being investigated as a terror attack, which would make it the fourth such attack since March, including two van ramming and stabbing attacks on and near London Bridge, and a bomb attack outside an Ariana Grande concert in Manchester, England. Hate crimes directed at Muslims have increased almost five-fold, according to British security officials, speaking on condition of anonymity in line with official policy. He was pronounced dead at the scene at 1.04am.