The 44-year-old opposition leader was arrested in January after returning from Germany, where he was recovering from a near-fatal poisoning that he and Western governments have blamed on the Kremlin.
A Moscow court has sentenced Sergei Smirnov to 25 days in jail for retweeting a post that poked fun at his resemblance to a Russian musician and made reference to an upcoming anti-Kremlin protest.
Alexei Navalny was arrested when he returned to Russia after recovering from poisoning, which he blames on Russia's president. He says the accusations against him are politically motivated.
Alexei Navalny was arrested Sunday after arriving back in Russia from Germany, where he had been recovering from nerve agent poisoning. A judge ordered that he remain in custody for 30 days.
Alexei Navalny said he has purchased a Sunday plane ticket to return to Moscow. He has spent months in Germany recovering from nerve agent poisoning.
It is "reasonable to conclude," the EU says, "that the poisoning of Alexei Navalny was only possible with the consent of the Presidential Executive Office."
The Russian opposition leader plans to return to Russia, according to his spokesperson. "It's puzzling to me why anyone should think otherwise," the spokesperson said.
Navalny, a longtime critic of President Vladimir Putin, was recently arrested after calling for a mass protest in Moscow.