Sergei was arrested in September 2021 in connection with a criminal case opened for online comments following the deaths of KGB officer Dmitry Fedosyuk and IT specialist Andrei Zeltser in Minsk.
In December 2022, he was found guilty of "inciting hatred or discord" and "organizing and preparing actions that grossly violate public order, or active participation in them," and sentenced to imprisonment in a penal colony.
He was released at the end of February 2023, having fully served his sentence.
