October 23, 2026, 1:26 AMRSSRU

Sergei Mironov

ImprisonedChecked October 18, 2026

Sergei Mironov, born 1981, Volgograd Oblast. Charges: Article 275 applied with Article 30 part 1, Russian Criminal Code (Preparation for treason against the state (preparation for a crime)); “Sergei Mironov’s case of preparation for treason”. Sentence (February 4, 2025): 9 years' imprisonment in a strict regime colony. Status: imprisoned; deprived of liberty since February 13, 2024; place of detention: Pre-trial detention centre No. 2, Volgograd Oblast. Recognition: Memorial: Support for Political Prisoners — recognised as a political prisoner, July 3, 2025.

In brief

Volgograd Oblast · Unemployed

Sentence

9 years

imprisonment in a strict regime colony

Verdict February 4, 2025

No information about an appeal ruling.

Charges

Full wording of the charges

According to the prosecution, in the period from February 2022 to January 2024 Sergei Mironov, dissatisfied with the political course of the Russian Federation and the special military operation conducted by the Armed Forces of Russia, had been in correspondence with a representative of Ukraine's intelligence services via the telecommunications network "Internet" and had proactively expressed his desire to join the AFU and participate in combat against the Russian Federation. In confirmation of his intentions, he recorded a video on his mobile phone where he stated his desire to switch to the side of the enemy and sent it to the representative of Ukraine's intelligence services via an Internet app. With the money provided by the AFU officer Mironov bought train tickets to travell to the territory of Ukraine and collected the necessary items for participation in combat. However, he was unable to complete his unlawful actions against the security of the Russian Federation, as he was arrested by law enforcement officers after boarding the train.

Latest event

July 3, 2025 — recognised as a political prisoner

Memorial: Support for Political Prisoners

Checked October 18, 2026 · no changes since October 15

Recognition by rights defenders

Timeline

  1. · Recognised as a political prisoner

    Memorial: Support for Political Prisoners

  2. · Imprisonment begins

    Pre-trial Detention Centre №2 (SIZO-2) of the Federal Penitentiary Service of the Russian Federation for the Volgograd Oblast

  3. · First-instance verdict

    guilty verdict · 9 years

  4. · Preventive measure: pre-trial detention

    Pre-trial Detention Centre №2 (SIZO-2) of the Federal Penitentiary Service of the Russian Federation for the Volgograd Oblast

  5. · Persecution begins

    Sergei Mironov’s case of preparation for treason

Criminal case

Sergei Mironov’s case of preparation for treason

There are no other defendants in this case in the database.

Write a letter

Facility: Pre-trial detention centre No. 2, Volgograd Oblast

Address (in Russian, as written on the envelope)

405850, Волгоградская область, г. Камышин, ул. Рабочая, 38, ФКУ СИЗО-2 УФСИН России по Волгоградской области, Миронов Сергей Геннадьевич, 1981 г.р.

Address checked October 18, 2026

Details and sources

Full summary

According to OVD-Info

A resident of Kamyshin, Volgograd region. On 13 February 2024 he was detained at the railway station and then detained for 14 days under the administrative article on petty hooliganism (Article 20.1 of the Code of Administrative Offences). On 27 February 2024 upon the end of the arrest term, he was detained again for 14 days under the same article. When the second term of administrative arrest ended, Mironov was taken into custody on charges of preparation for high treason. According to the prosecution, he intended to join the AFU. On 4 February 2025 Mironov was sentenced to nine years in a strict regimen colony.

All fields of the record
Citizenship
Russia
Sources (1)

Other people prosecuted under Article 275 applied with Article 30 part 1, Russian Criminal Code

Under the same article, not necessarily in the same case.

All 41 under this article →