At least five people were killed and around 40 injured, when a motorist mowed down several pedestrians as he drive a grey Huyandai 140, then leapt out and stabbed a police officer outside the UK parliament. The suspect was later shot dead by a police officer.

Metropolitan Police counter-terrorism chief Mark Rowley said that Islamic extremism was suspected in the attack.

Authorities believe that they know the identity of the suspect, but they would not reveal it while the investigations are going on.

The threat level of a terrorist attack in the United Kingdom was listed as severe. The attack was “highly likely”.

Leaders around the world unanimously condemned the terrorist attack in the heart of London.

The United Kingdom, Prime Minister Theresa May described the attack as “sick and depraved”.

The terror attack outside parliament comes exactly a year after in Brussels, and a week after London police took counter-terrorism measures.

India
Prime Minister Narendra Modi expressed his condolence “Deeply saddened by the terror attack in London. Our thoughts and prayers are with the victims and their families”.

Germany
Chancellor Angela Merkel said Germany stood "firmly and resolutely alongside Britons in the struggle against all forms of terrorism" while President Frank-Walter Steinmeier added: "In these grave moments, we Germans feel very close to the British people."

France
President Francois Hollande sent a message of "solidarity" and "support to the British people" saying France could identify with their pain after the attack, in which three French high school students were also wounded.

"France, which has been hit so hard in recent times, knows what the British people are suffering today," he said.

Prime Minister Bernard Cazeneuve tweeted: "Solidarity with our British friends, horribly attacked, full support for the injured French students, their families and their friends."

United States
The White House condemned the attack and pledged "the full support of the US government in responding to the attack and bringing those to justice who are responsible," spokesman Sean Spicer said at a briefing.

Canada
Canadian Prime Minister Justin Trudeau tweeted: "Our thoughts are with the victims of today's attack in London and their families. Canadians remain united with the people of the UK."

European Union
European Commission President Jean-Claude Juncker said the attack left him "highly emotional".

In Brussels to commemorate the one-year anniversary of attacks on the main airport and a metro station, Juncker said "the fact that exactly on the same day something similar happened in London, and to London, is really putting me in the situation of someone who does not have... enough words to express how I am deeply feeling."

European Council President Donald Tusk tweeted: "My thoughts are with the victims of the Westminster attack. Europe stands firm with the UK against terror and ready to help".

Russia
Speaking on Russian television, foreign ministry spokeswoman Maria Zakharova sent Moscow's "condolences" and said Russia felt Britain's pain.

"We consider it an evil to which it is necessary to fight collectively. In this moment, as always, our hearts are with Britons and we share their pain".

The Netherlands
Prime Minister Mark Rutte told Dutch television, he was shocked by the "horrific" news and said: "The city is in our hearts. We are following the situation closely, and are in contact with the British authorities."

Italy
Italian Prime Minister Paolo Gentiloni, who observed a moment of silence at the start of a meeting with Social Democratic lawmakers, expressed his "condolences" and said: "Italy and the United Kingdom remain side-by-side in our condemnation and firm response to all forms of terrorism".

Belgium
"Our condolences are with those who mourn and all who are affected in London," Prime Minister Charles Michel tweeted. "Belgium stands with UK in fight against terror."

Turkey
Turkish President Recep Tayyip Erdogan emphasised that "Turkey feels and shares deeply in the United Kingdom's pain" and that it stood in "solidarity" with Britain "in the fight against terrorism".

Erdogan had earlier warned Europeans in a speech on Wednesday that "no European, no Westerner will be able to take steps on the street safely and peacefully," as a crisis between Ankara and the EU showed no signs of abating.

Turkish Prime Minister Binali Yildirim called terrorism "a global catastrophe" on Turkish television, adding: "All countries should come together on the terror issue and fight together against" it.

Greece
"We express our solidarity with the British people on today's indiscriminate attack," Greek Prime Minister Alexis Tsipras tweeted.

Spain
Spanish Prime Minister Mariano Rajoy tweeted: "Spain stands with the British people. I condemn the attack in the vicinity of Westminster, London. Solidarity with the victims."

Portugal
"This attack clearly shows the priorities on which Europe must concentrate. It's only when we are united that we have the capacity to face these threats," said Portugal's Prime Minister Antonio Costa.

Australia
Australian Prime Minister Malcolm Turnbull said the assault was an attack on "freedom and democracy everywhere".

"But we will never, ever let the terrorists win. We will defeat and destroy them on the battlefield, we will defeat and defy them at home," he said.

"We will never change the way we live. We will never let them divide us."

Qatar
Qatar stressed its rejection of violence "in all its forms" and its support for the UK government "in all the measures it takes to maintain the country's security."

Venezuela
Venezuela's socialist President Nicolas Maduro expressed "full support for the people of London and our absolute rejection of all forms of terrorism."

"Enough terrorism, enough war, enough violence. We condemn terrorism in all its forms and support the victims and their families," he said in televised comments.

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