Khuram Shazad practised driving dangerously in a rented van hours before the London Bridge attack
Khuram Shazad Butt was spotted “speeding around corners” and driving dangerously in the rented vehicle just hours before the attack.
It led to a row with neighbours who feared for the safety of their children outside the 10-storey block of flats where the 27-year-old lived in Barking, east London.
The revelation comes as it emerged that Butt had been under investigation as a suspected terrorist since 2015.
Information from a member of the public who rang the anti-terrorist hotline became part of the inquiry, police said today.
But as there was “no evidence or intelligence of attack planning” the investigation was downgraded to low priority.
Butt and Rachid Redouane, 30, also from Barking, were named as two of the attackers today as Scotland Yard appealed for information about their movements in the “days and hours” before the attack.
A neighbour has told how Redouane visited his wife Cherisse and their child in a final goodbye at 7pm on Saturday hours before the rampage.
The man said: “I saw him in the lift. He wasn’t speaking.”
Seven women and five men have been arrested, including a man and a woman since released.
Six properties, including the homes of Butt and Redouane, have been searched. Redouane, who carried Irish identity papers and used an alias, was not known to counter-terror police.
He is believed to be a pastry chef living in Ireland and married to a Scottish wife, who was among those arrested.
Police are confident they know the name of the third killer but he was also not known to them.
Get Quotes on Home Insurance
Butt is believed to have been born in Pakistan but emigrated to Britain with his parents as a child. He has a brother who served in the British Army.
A few weeks ago, Butt became a father for the second time when his wife gave birth to a girl.
He recently tried to go to Syria to fight but was talked out of it by his family as his wife was pregnant.
Neighbours believed Khuram had hired the van to move house
On Friday, it was blocking people from coming in. A car beeped at him to say ‘move’ and he responded quite aggressively.
Mr Mimbo, resident
Last year, Butt appeared in the Channel 4 documentary The Jihadis Next Door with an Islamic State flag in London’s Regent’s Park.
The killer, known by his friends as “Abz”, had been reported to the anti-terror police over fears he was attempting to radicalise children.
He was thrown out of his local mosque after he interrupted a sermon.
And he was also a friend of IS killer Siddhartha Dhar, who was dubbed the new Jihadi John, after he featured in a video in 2015 leading a death squad who slaughtered five Syrian men accused of being spies.
Today, neighbours told how they thought Butt was preparing to move home when the white van used to mow down pedestrians was spotted outside his council flat.
Resident Michael Mimbo said: “On Friday, it was blocking people from coming in. A car beeped at him to say ‘move’ and he responded quite aggressively.”
Mr Mimbo said he had seen the van being raced up and down the road on Friday and Saturday. He told how another neighbour complained to Butt: “There’s kids here man. why are you driving so fast? It’s a 10mph area.”
Khuram from Barking, East London had been under investigation as a suspected terrorist since 2015
He told how the flat on the ground floor was raided by armed police early on Sunday morning.
The neighbour explained how Butt – who carried out the attack wearing an Arsenal shirt – had been a football fan who played table tennis and invited neighbours for barbecues.
But he became radicalised and started wearing flowing robes. Mr Mimbo said: “I thought maybe he was just devoting himself a bit more and becoming more religious.
“But I never, ever would have expected this – we didn’t have a clue that he was capable of this. “When I saw that picture of him I recognised his shirt.”
Friends of the family said Butt became radicalised around 2013 when he started visiting a conservative mosque. He appeared in the Channel 4 documentary which focused on a group of British extremists and was filmed at events attended by two notorious Islamic preachers.
At one, Butt appeared alongside Mohammed Shamsuddin, who has warned that “Sharia is coming to the UK” and that the black flag of Islam will fly over Downing Street.
Shamsuddin, who is said to have influenced the murderers of Drummer Lee Rigby, claimed that his views were “moulded” by the hate preacher Omar Bakri Mohammed who is now in jail in Lebanon for supporting terrorism.
Butt was also pictured with Abu Haleema, who was accused of radicalising a British schoolboy who was convicted over a plot to behead police officers during an Anzac Day parade in Australia. There is no suggestion Shamsuddin or Haleema are connected to Saturday’s attack.
Seven women and five men have been arrested in connection with the terror attack
Today neighbours said the suspected terrorist had worked for KFC and Transport for London.
Butt was said to have suffered a life-changing trauma in 2003 when he found his father dead in bed at home. In the same year he was reportedly run over outside his house and left with a permanent limp.
He later had an arranged marriage and fathered two children.
A neighbour said: “The father used to care for his children and make sure they grew up well.
“One morning, I was getting ready for work and the mother started banging on my door screaming that her husband wasn’t well.
London terror raids Sun, June 4, 2017
Police have raided a block of flats in Barking in connection with last night's London Bridge terror attack.
Play slideshow Getty Images 1 of 20
As police continue their investigations following the June 3 terror attacks, a block of flats in Barking is raided for possible suspects
“I went over and his body was stiff. He was lying on his right side with his arms curled up as if he had a stroke or a heart attack.
I tried to resuscitate him but it was too late. The little boy had found him in bed and he was crying hysterically.”
Months earlier Butt was run down after he dashed out between two parked cars.
The neighbour said: “His teeth were broken and his leg damaged so badly that he was forced to walk with a limp. The family received £2,500 in compensation from the insurers.”