Moscow [Russia], February 19: Yulia Navalnaya, the wife of Kremlin critic Alexei Navalny, who died mysteriously in prison, posted for the first time on Sunday after her husband's death.

Taking to Instagram, Navalnaya posted a picture of herself enjoying a moment with Navalny, two days after his death.  The caption of the poignant post read, "I Love You." Alexei Navalny Death: Over 400 Detained in Russia as Country Mourns the Death of Vladimir Putin’s Fiercest Foe.

Kira Yarmysh, the spokesperson for the late Russian opposition leader, confirmed Navalny's death and demanded that his body be handed over to his family "immediately." Yarmysh also accused Russian officials of lying to delay the process, CNN reported.

Yarmysh's statement comes after the Russian prison service said that Russian President Vladimir Putin's critic, Navalny, died on Friday after he felt 'unwell' during a walk in his prison and fell unconscious. The cause of his death is not clear.

Navalny had returned to Russia in 2021 from Germany, where he was undergoing treatment after being poisoned with Novichok. Upon arrival, Navalny was arrested on charges he dismissed as politically motivated.

Reports of Navalny's death sparked outrage, with some Western leaders blaming Putin. US President Joe Biden said that he is "outraged" by the reported death of Russian opposition leader Alexei Navalny and blamed Russian President Vladimir Putin for Navalny's death.

British PM Rishi Sunak, French President Emmanuel Macron and European Union President Ursula von der Leyen also condoled Navalny's demise while pinning the blame on Moscow.

Meanwhile, Navalnaya is expected to meet European foreign ministers in Brussels on Monday, Al Jazeera reported, citing the European Union's foreign policy chief, Josep Borrell.

"On Monday, I will welcome Yulia Navalnaya to the EU Foreign Affairs Council," Borrell posted on X. ‘Putin Is Responsible for Navalny’s Death’: US President Joe Biden Blames Russian President Vladimir Putin for Alexei Navalny’s Death (Watch Video).

"EU Ministers will send a strong message of support to freedom fighters in Russia" and "honour" Navalny's memory, he added.

Navalnaya also appeared at the Munich Security Conference on Friday, where she addressed an audience of leaders, diplomats and other officials. She had weighed coming out on stage or immediately leaving to be with the couple's two children, Daria and Zakhar, deciding her husband would want her to speak, Al Jazeera reported.

"I want Putin, his entire entourage, Putin's friends, his government to know that they will bear responsibility for what they did to our country, to my family, to my husband," she said.

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