Alexei was arrested on August 26, 2021, in connection with a criminal case involving group actions grossly violating public order, and in November of that year, he was convicted of participating in a post-election protest that took place on August 10, 2020, in Minsk.
Left Belarus before starting to serve his sentence.
In December 2024, a court hearing in absentia was held as part of a special proceeding on the issue of replacing the restriction of freedom with imprisonment in a penal colony.
