Novichok could remain active for 50 years, scientists tell police – BBC News

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BBC News
The nerve agent that poisoned a couple in Wiltshire could remain active for 50 years if left undisturbed in a sealed container, a counter-terror chief says. Neil Basu told a meeting in Amesbury that police were working on the theory that Dawn Sturgess
UK police: Novichok could last 50 years in sealed containerABC News
Nerve Agent That Poisoned Four People in the UK Could Remain Active for 50 Years, Police SayYahoo News
Novichok used in Wiltshire ‘could remain active for 50 years’The Guardian
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