UPDATE: Police have named Westminster attacker as Khalid Masood

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Updated by Lucy Thomas.

Metropolitan Police have named Khalid Masood as the man believed to be responsible for the attack in Westminster yesterday.

So-called Islamic State group have also claimed, through their news agency, that the attacker was a “soldier of the Islamic State.”

In the House of Commons this morning the British Prime Minister, Theresa May, said that the attacker was British and investigated by MI5 “many years ago.”

She also confirmed that the terror threat level remains at “severe”, meaning another attack is “highly likely.”

Overall, eight arrests have been made in raids by police last night following the Westminster attack yesterday.

Five people have died and 40 were injured after an attacker drove a grey Hyundai i40 on the pavements of Westminster bridge.

The attacker drove into a group of pedestrians before stabbing 48 year-old police officer PC Keith Palmer outside the Houses of Parliament at around 2:45 pm.

The alleged attacker was then shot by armed police as he approached a second officer grasping a knife. PC Palmer died later after the incident.

Local Bournemouth East MP Tobias Ellwood battled to resuscitate the officer as MP’s fled the Houses of Parliament to safety in Westminster Abbey.

Westminster attacks

Tobias Ellwood helping PC Keith Palmer

Prime Minister, Theresa May, paid tribute to PC Keith Palmer  saying:

He was every inch a hero and his actions will never be forgotten

The Queen has also now said that her “thoughts, prayers and deepest sympathy” are with those affected by “yesterday’s violence.”

It has been confirmed that three French schoolchildren from the Concarneau high school in Brittany are among those wounded when the vehicle drove into pedestrians on Westminster Bridge.

French newspaper ‘Le Telegramme’ said the trio, aged between 15 and 16, were walking along the bridge when a car knocked them down, leaving one of them on top of the car bonnet.

Home Secretary Amber Rudd expressed her condolences to those affected by yesterday’s tragic events:

We do not yet know the full impact of this terrible incident.

But I know that the whole country will be thinking and praying for those who are affected, as I am.

I want to thank the emergency services for the quick response and pay tribute to their bravery, their courage and their professionalism.

Police informed the public to avoid Parliament square, Whitehall, Westminster, Lambeth Bridge, Victoria Street up to the Broadway junction and the Victoria Embankment up to the embankment tube.

The Metropolitan Police urges anyone worried about friends and family to call its casualty bureau on 0800 056 0944 or 020 7158 0010.