One of the men accused of killing former Russian spy Alexander Litvinenko in London has died of Covid-19 in Moscow, it has been widely reported.
Dmitri Kovtun was one of two men that a UK inquiry ruled had poisoned Mr Litvinenko's tea with a rare radioactive substance in 2006.
In reports being attributed to Russian news agency Tass, Mr Kovtun is said to have contracted coronavirus before dying in a Moscow hospital.
