Sergey was convicted of "participation in group actions that grossly violate public order" in a criminal case opened after a protest that took place on September 13, 2020 in Brest, where people sang and danced in circles and a water cannon was used against them. According to the prosecution, the protest disrupted the operation of transport. Sergey was sentenced to restriction of freedom and sent to a correctional institution.
In July 2022, his punishment was increased and he was transferred to a penal colony, and in October of the same year he was convicted again under the article “insulting a government official.”
He was released in October 2024, having fully served his sentence as determined by the court.
