Mr Navalny said the move took place just days before a planned family visit, and was aimed at silencing him.But in a series of tweets on Thursday, the high-profile Kremlin critic said he had been accused by prison officials of being an "egregious offender" and moved to a "cell-type room".He said his new confinement is "a regular cramped cell, like the punishment cell, except that you can have not one but two books and use the prison kiosk, albeit on a very limited budget."He was initially jailed for two and a half years for breaking bail conditions while being treated in hospital, but was then given an extra nine years for fraud and contempt of court.Russia has repeatedly silenced criticism of its war in Ukraine, prosecuting those who have refused to use the term "special military operation" and blocking independent media outlets."