Surrey Police said the matter has now been formally passed to the coroner and an inquest will be held after finding no evidence of foul play. This was despite two post-mortem examinations carried out in November failing to establish Alexander Perepilichnyy's cause of death.
Toxicology samples were also taken from both post mortems but the results have not been released.
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Met Constable Thomas Hooper is said to have taken the medium-sized two-tier tin of biscuits from a storage cupboard.
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