 However, Andrei Soldatov has claimed that this operation against his newspaper was related to a forthcoming article on the storming of the Moscow theatre and freeing of the hostages there on 26 October.Soldatov has been interrogated four times by the Investigative Department of the FSB based in Lefortovo.In June 2008 Soldatov was questioned by the FSB in Lefortovo over the interview of the former SVR officer Sergei Tretyakov, who defected to the US in 2000.