The Westminster attacker was British-born and known to the police and intelligence services, Prime Minister Theresa May has revealed.

She told MPs he had been investigated some years ago but was not part of the current intelligence picture.
The so-called Islamic State group has said it was behind the attack.
Eight arrests in London and Birmingham followed the attack that has left four dead – PC Keith Palmer, Aysha Frade, Kurt Cochran and the attacker.

Mrs Frade worked at a London college, while Mr Cochran was from Utah, in the US, and visiting the capital with his wife Melissa, who is in hospital with serious injuries.
According to a family statement, the couple had been celebrating their 25th wedding anniversary and were due to return to the US on Thursday.
PC Palmer was a 48-year-old father, who was an unarmed member of the parliamentary and diplomatic protection squad, with 15 years’ service.

In the attack on Wednesday afternoon, a man drove a car along a pavement on Westminster Bridge, knocking down pedestrians, creating panic and leaving dozens injured.
After crashing his car into railings, the attacker ran towards Parliament where he stabbed PC Palmer. Armed police shot dead the attacker in the grounds.

Seven of those injured are still in hospital in a critical condition. A further 29 had been treated in hospital, police said.
Car hire company Enterprise said the vehicle had been rented from its Spring Hill depot in Birmingham.

Westminster terrorist Khalid Masood told staff at a budget hotel “I’m off to London tomorrow” the night before his deadly rampage, according to reports.

Terror group Islamic State has claimed responsibility and described Masood as one of its “soldiers”.
Last night it was claimed Masood, who used a number of aliases, stayed alone at the £59-a-night Preston Park Hotel in Brighton before carrying out the attack.

A source told The Sun: “He was very English but mixed race with a big beard.”
“He said he lived above a guitar shop in Birmingham but he’s not originally from the Midlands and had a London accent.

“But he said London wasn’t like what it used to be.”

Masood was described as “nice, polite and calm” – to the extent staff even wrote “nice man” next to his booking.
On Tuesday night he told staff he was “off to London” the next day.

Last night the death toll of victims in the atrocity rose to four after a 75-year-old man lost his fight for life.
A Met police spokesman said: “The man had been receiving medical treatment in hospital following the attack and life support was withdrawn this evening.

“Next of kin have been informed and are receiving support from trained family liaison officers.”

The attacker was a 52-year-old dad born in Kent who claimed to be a teacher.
He had a string of convictions for violent crimes and was a Muslim convert fuelling fears he may have been radicalised in prison.

Police confirmed he was once on MI5’s radar but was not being monitored before he mowed down dozens of pedestrians and stabbed a policeman to death on Wednesday.

Terror group Islamic State has claimed responsibility and described Masood as one of its “soldiers”.
Last night it was claimed Masood, who used a number of aliases, stayed alone at the £59-a-night Preston Park Hotel in Brighton before carrying out the attack.

A source told The Sun: “He was very English but mixed race with a big beard.”
“He said he lived above a guitar shop in Birmingham but he’s not originally from the Midlands and had a London accent.

“But he said London wasn’t like what it used to be.”
Masood was described as “nice, polite and calm” – to the extent staff even wrote “nice man” next to his booking.
On Tuesday night he told staff he was “off to London” the next day.

Last night the death toll of victims in the atrocity rose to four after a 75-year-old man lost his fight for life.
A Met police spokesman said: “The man had been receiving medical treatment in hospital following the attack and life support was withdrawn this evening.

“Next of kin have been informed and are receiving support from trained family liaison officers.”

The victim passed away as detectives continued to quiz eight terror suspects with alleged links to Masood.

It is believed Masood may have been radicalised in prison while serving time for GBH, wounding with intent and possessing an offensive weapon after an attack in 2003.

Police confirmed he had not been convicted of any crime since that year. According to reports, Masood had described himself as an English teacher. But is understood he never worked at any state schools.

One source described him as “a big bloke, he looked like he was a bodybuilder, you wouldn’t want to mess with him”.
He said Masood was a “very religious, well-spoken man” and added: “You couldn’t go to his home in Birmingham on Friday, because he would be at prayer.”

Police said the killer, born in Kent on Christmas Day, 1964, had been “known by a number of aliases”.
It is believed he last lived in the Winson Green area of Birmingham, where he shared a flat with a woman and a young child.

Neighbour Iwona Romek, 45, said yesterday: “When I saw the pictures on TV and in the papers, I recognised him as the man who used to live next door.

“I would see him quite often, but it would just be a ‘hello’ and a ‘how are you’.
“He had a young child, who I’d think was about five or six years old.”

Eight people have been arrested in raids across London, Birmingham and Carmarthenshire. They are three women aged 21, 26, and 39 and five men aged 23, 26, 27, 28 and 58. All were being quizzed on suspicion of preparation of terrorist acts