The attackers killed seven people and left 21 seriously injured
On Saturday evening, three men ploughed a van into pedestrians walking across London Bridge before storming Borough Market nearby to indiscriminately stab and kill innocent civilians in cold blood.
Islamic State has claimed responsibility for the attack, confirming via a statement from its Amaq agency that a “detachment” of jihadis carried out the assault.
According to reports, one of the extremists lived in Barking in east London, and had recently hired the van they used to begin their attack.
A friend told the BBC Asian Network he had reported the attacker to the anti-terror hotline after becoming alarmed that the man was becoming radicalised while watching YouTube videos of the infamous American hate preacher Ahmad Musa Jibril.
But according to the friend, the man was never arrested.
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.
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As police continue their investigations following the June 3 terror attacks, a block of flats in Barking is raided for possible suspects
Police killed all three attackers within eight minutes of the first call
At the Elizabeth Fry flats in King’s Road, where a number of arrests were made on Sunday morning, residents said they recognised the attacker from a photograph and said he was of Middle Eastern or Pakistani origin.
The residents said the man had children and had lived in the area for a number of years.
One neighbour, Italian mother-of-three Erica Gasparri, claimed she had reported him to police two years ago after he began “brainwashing” her children at a local park.
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She said she had confronted him after two of her children came home and said: “Mummy I want to become a Muslim.”
According to reports, the attacker had worked for a branch of the fast food chain KFC before leaving two years ago to work for the London Underground.
All three of the attackers wore what appeared to be suicide vests during the attacks, but these were later discovered to be fakes designed to deter police retaliation.
London Bridge was still cordoned off Sunday evening London Bridge terror: Scenes as armed police respond Sun, June 4, 2017
At least two people have died after being after reportedly being struck by a van on London Bridge on Saturday night.
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Armed police responding to the incident at London Bridge
They shouted “this is for Allah” while moving through pubs and restaurants in Borough Market armed with 12-inch knives.
Addresses in Barking and East Ham were raided in connection with the attack.