Mediazona reported finding records at the Rostov-on-Don Garrison Military Court concerning the detention of Sergei Frolov, a corporal in Russia's 22nd Special Forces Brigade. According to the court record described by the outlet, he was remanded in custody on a charge of committing a terrorist act as part of a group acting by prior conspiracy.
Mediazona said the court had repeatedly extended Frolov's pretrial detention, bringing the total authorized period to 11 months. The latest hearing mentioned in the accessible court record took place before October 19, 2026. Its November 4 report therefore concerns previously undisclosed information about the case, not a new arrest that day.
The investigation is being conducted by an investigative department of the FSB's directorate for the Southern Military District. Mediazona found that Frolov's lawyers had referred to confessions made during the investigation in an appeal against his detention. The nature of the alleged terrorist act is not specified in the accessible court record. The case concerns a charge and pretrial detention, not a conviction.
The 22nd Separate Special Purpose Brigade is based in the Rostov region. Mediazona noted its participation in Russia's war against Ukraine, including fighting in Mariupol and on the Zaporizhzhia front.