'Gaps in understanding' over MI6 spy's death

Deputy Assistant Commissioner Martin Hewitt, of the Metropolitan Police, says there remains "gaps in understanding" regarding the death of MI6 worker Gareth Williams.

But he has concluded, following two years of investigation, that it is "most probable" that the codebreaker was alone at the time of his death.

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Spy death 'probably an accident'

Police have concluded that a spy found dead in a locked holdall probably died alone in an accident - contradicting a coroner. But they have denied they have been duped by the intelligence agencies over Gareth Williams' death.