Cika wannan jumlar: A watan Fabrairun 2021, Bellingcat bincike tare da "The Insider" da "Der Spiegel" ya ce Kara-Murza ya bi ta wannan rukunin FSB wanda ake zargin
ya yi guba Alexei Navalny kafin ya kamu da rashin lafiya a 2015 da 2017.