Alexander was arrested in August 2021 as part of a criminal case opened under the article "organizing and preparing actions that grossly violate public order, or active participation in them" and placed in pretrial detention.
In November 2021, he was convicted of participating in a post-election protest that took place in Minsk from August 9 to 10, 2020, and sentenced to restricted freedom and placement in an open correctional facility.
He left Belarus before beginning his sentence. On July 18, 2022, Alexander was placed on the wanted list.
In January 2025, 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.
