Lord Hughes said the closed section of the £8million report 'cannot be made available to the public because of the damage which might be done to national security and the risk of harm which might be occasioned to some individuals if it were to be published'

Lord Hughes' report following the Dawn Sturgess Inquiry spans 174 pages, but one part of it is likely to remain secret for as long as 100 years.

The retired Supreme Court judge conducted behind closed doors interviews with "a number of witnesses" over several days inside a government building in London, which cannot be named. They included Metropolitan Police Counter Terrorism Commander Dominic Murphy, and a chemical and biological scientific adviser from the government's secretive science and defense lab Porton Down, who can only

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