Bulgarian journalist Kristo Grozev, who exposed the agents behind the poisoning of Russian opposition leader Alexei Navalny in 2020 and is on the list of "wanted" individuals by Russian President Vladimir Putin, shared his theories regarding the sudden death of Navalny. In an interview with "CNN," Grozev stated: "There are only two hypotheses here; the most innocent hypothesis is that his death resulted from three years of torture and slow killing in the illegal and inhumane solitary confinement he endured. Just in the last two years, Navalny spent more than 300 days in solitary, and the law stipulates that solitary confinement should not exceed two weeks, but the Putin regime found ways to keep him there for longer periods. He was deprived of medical care and any kind of balanced nutrition... this is just the most innocent theory." Grozev continued: "The unfortunately more likely theory is that he was poisoned for a second time. We do not have evidence yet; what we have are indicators of a hypothesis. One of them is that if it is indeed as the government said, that he felt unwell and collapsed due to a blood clot during his morning walk in the prison yard, where is the evidence of that? Where is the visual evidence? All Russian prisons are equipped with surveillance cameras, and we have not seen anything so far." According to the state-run TASS news agency, Russian opposition leader Alexei Navalny died in prison on Friday, as reported by the country's prison service.