Scotland Yard name attacker as Khalid Masood, 52, born in Kent. It is believed that Masood was most recently living in the West Midlands.
Scotland Yard said Masood was not the subject of any ongoing terror investigations and there was no information about his intentions.
American victim has been named as Kurt Cochran, from Utah. Cochran was travelling around Europe with his wife Melissa, who is thought to be in hospital with a broken leg after being knocked off the bridge.
The so-called Islamic State have claimed that the Westminster Attacker was a “soldier of the Islamic State.”
Westminster Bridge and has now reopened.
Four people were killed and several have been injured in yesterday’s suspected terrorist attack in London.
Metropolitan police officer PC Keith Palmer, 48, was stabbed to death after the suspect drove through a crowd of pedestrians, killing three.
The suspect is also dead.
Eight have been arrested in connection with the attack after Police raided six properties across London, Birmingham and elsewhere.
It is believed that the suspect was British born and has been investigated by MI5 in the past on concerns of violent extremism.
However, Prime Minister Theresa May assured that he was not part of current intelligence investigations and there was no prior knowledge of his intent or of the plot.
Both the Prime Minister and Scotland’s First Minister today sent messages of reassurance to the public.
The Queen also issued a statement saying her “thoughts, prayers and deepest sympathy” were with those affected.
Police presence has also been stepped up to “reassure Londoners,” with the Metropolitan Police tweeting:
Four students from Edge Hill University in Lancashire are among the injured.
They were part of a group of 13 students on a two day visit to the Houses of Parliament with their lecturer.
It is believed one remains in hospital, but is not critical.
Three French schoolchildren were also injured in the attack.
Two of the boys, from Brittany, are in serious condition but their injuries are not believed to be life threatening.