MI5 could not have prevented Fishmongers’ Hall terror attack, inquest told

A senior officer said a review of the incident involving Usman Khan concluded MI5 ‘could not have taken any action or materially changed the outcome’.

Usman Khan
Usman Khan

MI5 could not have prevented the Fishmongers’ Hall attack despite earlier intelligence that Usman Khan wanted to “die and go to paradise”, a senior security officer has told an inquest jury.

An investigation immediately after the atrocity – in which the homegrown jihadi killed Cambridge graduates Saskia Jones, 23, and Jack Merritt, 25, and injured three other people at a prisoner education event in London on November 29 2019 – found that the security service could not have stopped it.

The 28-year-old convicted terrorist, from Stafford, who launched his bloody rampage with two knives and a fake suicide belt, was shot dead by police after being chased by delegates on to London Bridge.

Inquests at City of London’s Guildhall into the deaths heard that Khan was allowed to attend the event despite intelligence that he would “return to his old ways” upon his release from prison 11 months earlier.

Incident on London Bridge
London Bridge terror attack victims Jack Merritt, 25, and Saskia Jones, 23 (Metropolitan Police/PA)

On Thursday, a senior MI5 officer, known as Witness A for legal reasons, said security services remained sceptical of Khan, but that there was no reason to feed concerns over his attendance to the central London event into meetings of Mappa (multi-agency public protection arrangements) beforehand.

She said: “At that time, there was no intelligence to suggest he should not be allowed to attend.

“On the flip side, preventing someone from doing something can have ramifications.”

The witness told the court that MI5’s review after the Fishmongers’ Hall attack concluded that it “could not have taken any actions or materially changed the outcomes of this case.

“The investigative and operational decisions taken by MI5 in this case were sound.”

She said the security service first became aware of Khan in 2008, as a member of terror group al-Muhajiroun (ALM).

He was linked to a plot to attack the London Stock Exchange and jailed for planning a terror camp abroad.

The officer, who gave evidence from behind a screen, said MI5 was aware that Khan had been involved in violence in prison.

Jonathan Hough QC, counsel for the coroner, asked: “Was there also evidence he wanted to die and go to paradise?”

Witness A replied: “There was information to that effect.”

Jurors were told that Khan had retained contact with his co-defendants and other terrorists outside prison.

But, in 2015, MI5 took the decision to close its investigation into him.

Asked whether, in hindsight, she feels that was the right decision, Witness A replied: “I do. We had carried out quite a significant period of investigation while he was in prison, we received a steady stream of intelligence while in prison, and we saw no activities of national security concern, therefore it was the right time to close the investigation.”

She added: “We cannot investigate people forever.”

Witness A said MI5 had shared with counter-terrorism police two strands of prison intelligence before his release – that Khan was preparing “to return to his old ways”, and that he was aspiring to carry out an attack upon release.

She said both strands of intelligence were uncorroborated, however the detail about any apparent intention to commit an atrocity was not passed on to Mappa.

Jurors heard that MI5 opened a new investigation into Khan in August 2018 in readiness for his release into the community in December.

Agents went on to carry out heightened surveillance on Khan and remained “sceptical” that he may be complying with the terms of his release in order to avoid scrutiny.

The inquests into Ms Jones and Mr Merritt’s deaths continue.

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