Russian oligarch Boris Berezovsky was "strangled" by an assailant who then made it look like he had hanged himself, a professor suggested at his inquest.
Professor Bernd Brinkmann, an expert on hanging and asphyxiation cases, told the hearing that he believed two people were involved in the death of the businessman, who was discovered slumped on the bathroom floor at his ex-wife's luxury property in Ascot, Berkshire, on March 23 last year.
Giving evidence this afternoon, Professor Brinkmann told the hearing: "In my view there is no way for death by hanging [...] There exists two major, major concerns against."
Prof Brinkmann said the marks on his neck were "far away from the typical inverse 'V' shape" usually seen.
He suggested the exiled Russian could have been attacked suddenly from behind and quickly strangled, which was why there were no signs of a struggle.
More top news
There is an "urgent need" for a "simpler and more trusted" system for investigating clinical failures, according to a damning report.
Over 100 mothers and fathers were investigated for leaving their children unsupervised in the final three months of 2014, new figures find.
The Royal Fleet Auxiliary ship RFA Argus has been recognised for providing aviation and medical support over 33 years of service.