Sergei was found guilty in 2021 of insulting police officers S.V. Shramov and A.L. Shlupakov by posting a comment on the social network Odnoklassniki and sentenced to restricted freedom in an open-type facility.
In November 2022, a court hearing was held, following which Sergei's sentence was increased and he was transferred to a penal colony.
He was released in August 2023, having fully served his sentence.

