his wife Yulia, who has not been allowed to visit him since. Amnesty International declared Navalny to be a prisoner of conscience and called on the Russian authorities to release him. A number of officials and political figures from the United States and European Union, including U.S. Secretary of State Mike Pompeo, German foreign minister Heiko Maas, British foreign secretary Dominic Raab and European Commission president Ursula von der Leyen, expressed concern and called on the Russian authorities to release Navalny. On 18 January, a court decision ordered the detention of Navalny until 15 February for violating his parole. A makeshift court was set up in the police station in which Navalny was being held. Another hearing would later be held to determine whether his suspended sentence should be replaced with a jail term. Navalny described the procedure as "ultimate lawlessness". He also called on his supporters to take to the streets, saying: "Do not be silent. Resist. Take to the streets — not for me, but for you". Navalny's regional network head, Leonid Volkov, said that preparations were being made for protests to be organised across the country on 23 January. On 19 January, while in jail, an investigation by Navalny and his Anti-Corruption Foundation (FBK) was published, accusing Putin of corruption. His arrest led to protests across Russia on 23 January 2021. On 2 February, a Moscow court replaced Navalny's three-and-a-half years suspended sentence with a prison sentence, minus the period of time he spent under house arrest, meaning he would spend two-and-a-half years in a penal colony. On 4 February, Sergey Maximishin, the deputy chief physician of the Omsk hospital that treated Navalny, suddenly passed away, the hospital said in a statement. Omsk's regional health ministry attributed his death to a heart attack. Navalny's chief of staff, Leonid Volkov said: knew more than anyone else about Alexey's condition so I can't dismiss possibility of foul play... However Russia's health care system is very poor and it's not uncommon for doctors of his age to suddenly die." Opinions of doctors and scientists Opinions of scientists who participated in the development of Novichok Vladimir Uglyov One of the developers of substances like Novichok, Vladimir Uglyov, said that he "trusts the German specialists 100%" and suggested that the poison was delivered using “a solution (for example, in dimethylformamide) of a solid analogue of A-234, namely, a solid A-242, which was