大象传媒

Legal teams representing many survivors injured in the explosion said they have submitted a group claim to the Investigatory Powers Tribunal (IPT).

MI5 said it would not comment on ongoing legal proceedings.

In March 2023, the director-general of MI5 Ken McCallum said he was "profoundly sorry" the security service did not prevent the Manchester Arena attack.

His comments followed the findings of a public inquiry which concluded MI5 missed a significant chance to take action that might have stopped the bombing.

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