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Litvinenko contact 'is in coma' Litvinenko contact 'is in coma'
(10 minutes later)
A Russian businessman who met the former KGB spy Alexander Litvinenko on the day he fell ill is now in a coma, Russia's Interfax agency reports.A Russian businessman who met the former KGB spy Alexander Litvinenko on the day he fell ill is now in a coma, Russia's Interfax agency reports.
Dmitry Kovtun, a security expert, met Mr Litvinenko at a bar in London's Millennium Hotel on 1 November.Dmitry Kovtun, a security expert, met Mr Litvinenko at a bar in London's Millennium Hotel on 1 November.
Mr Litvinenko was admitted to hospital on the same day and died from radiation poisoning three weeks later.Mr Litvinenko was admitted to hospital on the same day and died from radiation poisoning three weeks later.
Another Russian who was at the same meeting, ex-spy Andrei Lugovoy, is also in hospital. Another Russian who was at the same meeting, ex-spy Andrei Lugovoi, is also in hospital.
Earlier on Thursday, workers at the Millennium Hotel tested positive for low levels of polonium-210, the radioactive substance blamed for Mr Litvinenko's death.Earlier on Thursday, workers at the Millennium Hotel tested positive for low levels of polonium-210, the radioactive substance blamed for Mr Litvinenko's death.
Seven workers at the hotel's Pine Bar appeared to have been exposed, the UK's Health Protection Agency said.Seven workers at the hotel's Pine Bar appeared to have been exposed, the UK's Health Protection Agency said.
The agency said the risk to the general public was likely to be "very low".The agency said the risk to the general public was likely to be "very low".
Russian investigation
A funeral service for Mr Litvinenko was held at a central London mosque on Thursday.
The former spy, a vocal critic of the Kremlin, issued a statement on his deathbed accusing Russian President Vladimir Putin of ordering his poisoning.
The Kremlin has described the allegation as "nonsense".
Russian prosecutors on Thursday announced they would launch a criminal investigation into Mr Litvinenko's death and what they described as the attempted murder of Mr Kovtun.
Speaking before the announcement that Mr Kovtun was in a coma, prosecutors said he had shown some signs of radiation poisoning.
The Russian investigation will run in parallel to a murder inquiry UK police are conducting into the Litvinenko case.