Alexander Perepilichny handed over documents to Swiss prosecutors in 2010 outlining the involvement of senior Russian officials in a $230 million fraud
Calls have been made for Britain to reopen its investigation into the death of a Russian whistleblower who died with similar symptoms to opposition leader Alexei Navalny.
Businessman Alexander Perepilichny died in 2012 while he was jogging near his home in Surrey.
Mr Perepilichny handed over documents to Swiss prosecutors in 2010 outlining the involvement of senior Russian officials in a $230 million fraud.
Tests following his death found a toxin from the Chinese flowering plant Gelsemium in his stomach - this can trigger cardiac arrest when ingested.
However, Surrey Police maintains that "no identifiable toxin was found and that remains the case".
The UK and its allies on Saturday pinned the blame for Mr Navalny’s death on the Russian state, adding he was likely poisoned using a dart frog toxin.
In light of this, Bill Browder, who helped Mr Perepilichny expose the fraud, has called for the UK to reopen the investigation into his death.
Read more: Russia 'possessed lethal dart frog toxin' used to kill Navalny, UK claims
He told the Telegraph: “We were trying to determine what type of poison was used on Alexander Perepilichny in 2012, and with this new information on the Navalny poisoning, it has many similarities.
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