Westminster attack: Police seize vehicles in Birmingham as Khalid Masood mugshot released

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• MORE: Who was knifeman killer Khalid Masood?

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• UPDATES: Thursday's live coverage from our reporters in Birmingham and London

• MORE: Hagley Road residents describe dramatic armed terror raid

Three vehicles were seized from a property in Winson Green this afternoon, as details emerged of an eighth West Midlands arrest in relation to Wednesday's attack.

A van and two cars were taken away on recovery trucks from a three-storey home in Winson Green this afternoon, where a man was reportedly arrested by police early on Thursday.

A white Ford Ka, a silver BMW estate car and a red Renault Kangoo were recovered from the scene on Friday afternoon, shortly after police officers emerged from the property carrying a plastic box.

The cars were seized after Scotland Yard's top anti-terror cop named the fourth victim as 75-year-old Leslie Rhodes and revealed that two more 'significant arrests' had been made overnight.

It later emerged that two people had been arrested in Manchester and a third person had been detained in Birmingham, bringing the total number of people arrested in relation to the attack to 11. Eight of these suspects were held in the West Midlands.

This evening West Midlands Police said that six people arrested on suspicion of terrorism offences on Thursday morning in Hockley, Birmingham, have been released from police custody.

The six have fully co-operated with officers working on the investigation, they said.

Assistant Chief Constable Marcus Beale, who leads the West Midlands Counter Terrorism Unit, said: "As a result of their co-operation and our enquiries we are completely satisfied that they are not connected in any way to the terrorist attack in Westminster on Wednesday.

"We are very appreciative of their co-operation and support."

All six have now been released from custody in the West Midlands and will face no further police action.

The Metropolitan Police confirmed that detectives are continuing to search two addresses in Birmingham and one in East London.

The house in Winson Green, which is still be examined by search teams, is on the same estate as a three-storey townhouse thought to have been occupied by attacker Khalid Masood.

Residents claimed armed officers had forced their way in to the property at around 6.30am on Thursday.

Next-door neighbour Shekila Sahota said a man, thought to be in his 40s or 50s, had lived at the address with several young women for around a year.

Ms Sahota, 48, said: "They were very, very quiet people and I never saw them together. But he used to make a lot of trips up and down the road and he sold cars from here.

"The police knocked the door in at about 6.30 and you could hear them shouting 'Open' and 'Clear' and 'Get down'.

"The man they led away was put in the van straight away and he had a big smirk on his face when they took him away."

Raveena Rull, 23, who also witnessed the raid, said: "It was really scary - there were guns everywhere. You don't know what's going on and it's just mad.

"He was smiling as he was arrested with the whole road blocked off."

On Friday morning anti-terror officer Mark Rowley appealed to the public for information about Khalid Masood, who was born Adrian Russell Ajao but was also known as Adrian Elms.

Mr Rowley said two people remain in hospital in a critical condition, one with a life-threatening injuries, while two police officers injured in the attack are also in hospital with 'significant injuries'.

Asked about where Muslim convert Masood, 52, had been radicalised, Mr Rowley said: "As I have said our investigation focuses on understanding his motivation, preparation and associates.

"Whilst there is no evidence of further threats you will understand our determination to find out if he either; acted totally alone, inspired by terrorist propaganda; or, if others have encouraged, supported or directed him.

"To that end in our continuing investigation and ongoing covert activity we have made further significant arrests overnight - in the West Midlands and north west."

It comes after police scoured for evidence at properties in the Hagley Road and Winson Green areas of Birmingham yesterday, while neighbours spoke of their shock at learning they had been living near the terrorist.

Mr Rowley said searches at five address were ongoing and 16 have finished.

Detectives have seized 2,700 items from the searches, including "massive amounts of computer data".

He said officers had spoken to around 3,500 witnesses - including 1,000 who were on Westminster Bridge and around 2,500 who were in Parliament.

Asked whether Masood had travelled overseas, Mr Rowley said "we are looking at his history".

But he reiterated Prime Minister Theresa May's comments in Parliament that while he had been investigated previously he has been a "peripheral figure" not implicated in any current probe.

As detectives appealed for more information about Masood, a picture of the middle-aged murderer of many aliases who wrought carnage on Westminster began to emerge.

Masood, who ploughed a car down Westminster Bridge and stormed the Parliamentary estate armed with two blades, fatally knifing Pc Keith Palmer, had a string of convictions stretching back decades.

Hours before carrying out his atrocity, The Sun said he stayed in the Preston Park Hotel in Brighton, telling staff as he checked out that he was he was going to London.

He added: "It isn't what it used to be."

A member of staff at the hotel said on Thursday night: "We have been instructed not to talk."

Further details emerged about his violent history, which included an episode when he stabbed a man in the nose in the driveway of a nursing home in Eastbourne in 2003.

More candlelit vigils for the victims are scheduled on Friday in Birmingham and London.

Scotland Yard said Masood - who was shot dead by police - was born in Kent on Christmas Day in 1964.

After leaving Kent, it is thought he most recently spent time in the West Midlands, with a witness to an armed police raid on a flat in Hagley Road on Wednesday night saying: "The man from London lived here."

Masood is also thought to have spent periods living in London, Sussex and Luton.

He was known to police and MI5 and had convictions for assaults, including GBH, possession of offensive weapons and public order offences.

His victims on Westminster Bridge included a US tourist from Utah who was celebrating his wedding anniversary and a "highly regarded and loved" member of college staff.

Kurt Cochran and his wife Melissa, on the last day of a trip celebrating their 25th anniversary, were visiting her parents, who are serving as Mormon missionaries in London. Mrs Cochran was badly injured.

Aysha Frade, who worked in administration at independent sixth-form school DLD College London, in Westminster, is understood to have been 43 and married with two daughters.

Up to 50 other people were injured in the attack, with casualties including Britons, French children, Romanians, South Koreans, Greeks, and people from Germany, Poland, Ireland, China, Italy and the United States.