There is no reason to believe “imminent further attacks,” she asserts, declaring "we are not afraid."

The man who mowed down pedestrians on a London bridge and fatally stabbed a police officer on Parliament’s grounds was born in Britain and was known to intelligence services, Prime Minister Theresa May said Thursday.

Ms. May, who didn’t disclose the man’s name, said that he was once investigated for extremism links, but was considered a peripheral figure.

The revelation came moments after Parliament held a minute of silence and reconvened less than 24 hours after Wednesday’s brutal attack and forced a lockdown of the British government’s seat of power.

We are not afraid

Ms. May delivered a defiant message to the House of Commons, declaring simply- “We are not afraid.”

In a sweeping statement, she set an unyielding tone, promising answers as to why a British-born national drove an SUV into innocent pedestrians along Westminster Bridge before charging into a parliamentary courtyard and stabbing a police officer. Police shot and killed the attacker.

While she honoured the police, she also saluted the everyday actions of millions who went about their lives in London as normal and describing it as proof that the attack failed to break the determination of Londoners and Britons.

"As I speak, millions will be boarding trains and airplanes to travel to London, and to see for themselves the greatest city on Earth,” she told the House. "It is in these actions — millions of acts of normality — that we find the best response to terrorism response that denies our enemies their victory, that refuses to let them win, that shows we will never give in."

Slain cop honoured

Parliament began its moment of silence at 9-33 a.m. (5-33 a.m. EDT), honouring the slain police officer, 48-year-old Keith Palmer, a 15-year veteran of the Metropolitan Police and a former soldier. Parliament then returned to business, an act of defiance to those who had attacked British democracy.

"Those who carry out such wicked and depraved acts as we saw yesterday [Wednesday] can never triumph in our country and we must ensure it is not violence, hatred or division but decency and tolerance that prevails in our country," Trade Secretary Liam Fox said.

“Hear, hear!” lawmakers from all parties responded in unison.

Authorities know the identity of the man who went on the car and gun rampage at Parliament on Thursday, but police and Ms. May didn’t disclose his name.

Believe it is lone-wolf

Police believe that the man acted alone and there is no reason to believe “imminent further attacks” are planned, she said.

Mayor Sadiq Khan called for Londoners to attend a candlelit vigil at Trafalgar Square on Thursday evening in solidarity with the victims and their families and to show that the city remains united.

The threat level for international terrorism in the U.K. was already listed at severe, meaning an attack was “highly likely.”

President Donald Trump was among world leaders offering condolences.

London a target for long

London has been a target for terrorism many times over past decades. Just this weekend, hundreds of armed police took part in an exercise simulating a “marauding” terrorist attack on the River Thames.

Ms. May said underscored that the attack targeted "free people everywhere," and she said she had a response- "You will not defeat us."

"Let this be the message from this House and this nation today -- our values will prevail," she said.