Sergey Isupov

A resident of Vladivostok. On 11 September 2025, a case was brought against him and three other people for participation in extremist activities due to their involvement in the Jehovah's Witnesses community, which was groundlessly recognised as an extremist organisation and banned in the Russian Federation.

On 17 September law enforcers came to his home with a search. After that, he was taken to the Investigative Committee for interrogation, and then Isupov was charged.