Sobol, 33, is a key figure in a new generation of opposition challengers, and had planned to run for parliament

Russian opposition figure Lyubov Sobol gives a news conference in Moscow, Russia January 26, 2021.

Russia restricts Navalny ally movement for 18 months

Navalny pled not guilty and demanded his immediate release

On his return to Russia on Jan. 17, Navalny was arrested at the airport, which provoked mass protests throughout Russia