Detention: April 18, 2024, Kerch, temporarily occupied Autonomous Republic of Crimea.

Sentence: As of July 19, 2026, no sentence has been issued. Serhii Kozlov remains in custody. The Russian Federation accuses him under Article 205.3 of the Criminal Code of the Russian Federation (training for the purpose of carrying out terrorist activities), Article 205 part 2 point 'v' (terrorist act), Article 30 part 1 and Article 223.1 part 1 (preparation for illegal manufacture of explosive devices), Article 275 (treason), Article 30 part 1 and Article 205 part 3 point 'b', Article 30 part 1 and Article 205 part 2 points 'a', 'v' (preparation for a terrorist act), Article 222.1 part 3 points 'a', 'v' (illegal acquisition, storage, transportation, and carrying of explosives and explosive devices). The case is being reviewed by the Southern District Military Court in Rostov-on-Don. Human rights organizations consider the prosecution politically motivated.

Serhii Volodymyrovych Kozlov was born on November 11, 2000. He is a resident of Kerch, Autonomous Republic of Crimea. He is married to Yevheniia Samoilova, who is also implicated in this criminal case. There is no confirmed information in open sources about his education, professional activities, or other biographical details.

On April 18, 2024, FSB officers detained Serhii Kozlov and his wife Yevheniia Samoilova in Kerch. After the detention, their relatives were unaware of their whereabouts for a long time. Serhii was held in pre-trial detention centre No. 8, and Yevheniia in pre-trial detention centre No. 1 in Simferopol, with no official charges initially brought against them. It was only later that the initiation of criminal proceedings became known.

According to the Russian investigation, Serhii Kozlov allegedly underwent training for terrorist activities, manufactured or prepared to manufacture explosive devices, planned terrorist acts, and collaborated with Ukrainian special services. He was also accused of treason. These claims cannot be independently verified as the case materials remain classified, and court sessions are held with significant access restrictions.

After the initial investigation phase, Serhii Kozlov was transferred to Rostov-on-Don, where his case began to be reviewed by the Southern District Military Court. According to the Crimean Tatar Resource Center, Yevheniia Samoilova was also transferred to Rostov along with him. Human rights defenders emphasize that transferring civilians from occupied Ukrainian territory to the Russian Federation violates international humanitarian law.

As of July 19, 2026, there is no information in open sources about a verdict being issued or the completion of the trial.

Information used from open sources: Representation of the President of Ukraine in the Autonomous Republic of Crimea, Crimean Tatar Resource Center, Suspilne Crimea, Human Rights Project 'Support for Political Prisoners. Memorial'.

Photo: Suspilne Crimea.

Update date: 19.07.2026.