A major forensic report into Russian tycoon Boris Borozevsky's death found no evidence of poisoning or radiation, an inquest has heard.
Peter Bedford referred to a 22-page report submitted by forensic scientist Raymond Fysh, which detailed tests for poisoning including radiation and found no evidence of any.
A statement read out earlier by forensic scientist Sarah Tarrant said toxicology tests found traces of various prescription medicines in Mr Berezovsky's system, although it was not possible to tell when they had been taken or in what quantity.
Ms Tarrant also said she "couldn't rule out the possibility that he had ingested morphine or possibly even heroin", though the latter could have come in the form of poppy seeds found in food and herbal teas.
More top news
After a mild and quiet night, the best of the sunshine will be across the south east.
The presumptive Democratic Presidential candidate said Kaine is everything Donald Trump is not as they shared a platform for the first time.
Team Sky's Chris Froome is set to win the 2016 Tour de France with an overall lead of four minutes 11 seconds after stage 20 to Morzine