The man suspected of driving the van was arrested on suspicion of "the commission, preparation or instigation of terrorism including murder and attempted murder", police said.
"The United States strongly condemns last night's attack that appears to have targeted Muslim worshippers in London", Nauert said.
He told the crowd "an attack on one faith is an attack on us all".
The London Ambulance Service took nine people to three London hospitals.
Armed cops swopped on the vehicle, allegedly hired from Wales, shortly after midnight.
It was unclear whether the man died as a result of the attack, Basu said.
"We are devastated for the families, our hearts go out to the people who have been injured". Two others were treated for minor injuries at the scene.
Another neighbour said: "I actually heard him singing in the street yesterday [Sunday] - weird really".
Dr Feldman said: "Unlike all other forms of ethnically-based or faith-based hate attacks which are majority male-on-male, anti-Muslim hate attacks are majority male-on-female. It seeks to drive us apart and to break the precious bonds of solidarity and citizenship which we share in this country", May said. "We're not going to let them".
Since the London Bridge attack earlier this month, police say hate crimes against Muslims have increased five-fold.
After an attack outside a London mosque, which is being investigated as a terrorist act, the author pointed out a pervasive double standard on extremist violence.
"My son is no terrorist - he's just a man with problems and I don't know how to cope with all this", she told The Sun.
Osborne's next-door neighbor, Mr Khadijeh Sherizi, told The Telegraph: "I saw him on the news and I thought 'Oh my God that is my neighbour".
He said as he attended the injured, others grappled with the driver as he tried to run away. The incident occurred at 12:20 a.m. June 19.
"Some big van. crushing the people in the mosque. I just can't believe it".
May attempted to counter that feeling in her speech, declaring that police arrived at the scene within one minute, and that it was classified as a possible terror attack in eight minutes.
"He punched me in the head", Hashi said, showing his bruises.
Members of the public are asked to remain vigilant and report any suspicious activity to police.
Mr Khaliel described Muslim hijab-wearing women as the "silent victims" who have "seen the brunt of these attacks". "Secretary of State Rex Tillerson has reportedly already said the State Department will break with recent tradition and not host a Ramadan reception, as it has done almost annually for two decades".
The ministry also warned against Islamophobia and called on the worldwide community to cooperate against terrorism. Labour Party leader Jeremy Corbyn, who represents the area, uses the mosque as a place to meet with residents.
On May 22, a suicide attack killed 22 people and injured almost 60 after an Ariana Grande concert in Manchester.
The London Bridge attack was on June 3.
- Investigation of the incident is being carried out by the Counter-Terrorism Command. They said they would sort it out.