The news was confirmed Tuesday on Facebook by Moscow Times board member Damian Kudryavtsev, who was close to both Glushkov and Berezovsky. She added that police removed several bags of evidence.
The UK government has said it is "highly likely" Russia is behind the attack, and Russian president Vladimir Putin has been given until midnight to give the UK government an account of what happened.
Glushkov told the inquiry that he bumped into Litvinenko in the office of Boris Berezovsky, a powerful oligarch and émigré who was found dead in 2013 on the bathroom floor of his home in Berkshire, on the western outskirts of London.
"There is no evidence to suggest a link to the incident in Salisbury", the Metropolitan Police said in a statement.
Police in London said they believed they knew the identity of the deceased man but that the body had not yet been formally identified.
A police officer stands guard outside of Nikolai Glushkov's home on Tuesday.
Charter bus carrying Houston high school students crashes in Alabama
Rescuers used every piece of equipment on every truck to reach them, Mack said: "This is what we call an all-out". A school district spokesman told the Houston Chronicle that high school band students were traveling on the bus.
A former deputy director of Aeroflot, Glushkov died at the age of 69, The Telegraph wrote citing a report by Russia's Business FM radio station with reference to Glushkov's lawyer.
Russian media reported that Glushkov was granted political asylum in Britain in 2010.
He said the tycoon's former wife noticed marks on his neck minutes after he was found dead, adding: 'A scarf was there. An inquest recorded an open verdict.
Glushkov left Russian Federation after a Moscow court sentenced him to a two-year suspended sentence for fraud in 2006.
Speaking to the Guardian at the time, Glushkov said he was extremely sceptical that Berezovsky took his own life, claiming that he was "killed".
In 2017, a Moscow court reviewed Glushkov's case and sentenced him in absentia to eight years for embezzling more than $122 million from Aeroflot.