October 20, 2026, 11:50 AMRSSRU

Marlen Mustafayev

ImprisonedChecked October 18, 2026

Marlen Mustafayev, born 1988, Occupied territory of Republic of Crimea. Charges: Article 205.5 part 1, Russian Criminal Code (Organizing the activities of a terrorist organization); Article 278 applied with Article 30 part 1, Russian Criminal Code (Preparing for violent seizure of power or alteration of the constitutional order); “Marlen Mustafayev's case”. Sentence (August 6, 2023): 17 years' imprisonment in a strict regime penal colony, the first 3 years of which are to be served in prison. Status: imprisoned; deprived of liberty since January 1, 2022; place of detention: Prison, Ulyanovsk Oblast. Recognition: Memorial: Support for Political Prisoners — recognised as unlawfully deprived of liberty for exercising freedom of religion, December 22, 2022.

In brief

Occupied territory of Republic of Crimea · Simferopol · Manual workers · Terrorism cases, Cases against Hizb ut-Tahrir

Sentence

16 years 8 months

17 years' imprisonment in a strict regime penal colony, the first 3 years of which are to be served in prison

Sentence changed August 6, 2023

First instance, November 29, 2022: 17 years

Charges

Full wording of the charges

According to the investigation, since at least February 2017 he had been an active member of Hizb ut-Tahrir and, together with Azamat Eyupov, Enver Omerov, Riza Omerov, and Aider Dzhapparov, “organized the activities of a cell” of the organization in the town of Belogorsk, Republic of Crimea. He allegedly “carried out covert anti-Russian, anti-constitutional activities” in the area, encouraged local residents to join Hizb ut-Tahrir, directed the cell’s activities, organized clandestine meetings, instructed participants on “identifying and recruiting new members” to Hizb ut-Tahrir, assigned roles, established security measures, and monitored their compliance.

Latest event

October 1, 2023 — imprisonment begins

Checked October 18, 2026 · no changes since October 15

Recognition by rights defenders

Timeline

  1. · Imprisonment begins

  2. · Appeal ruling

    sentence changed · 16 years 8 months

  3. · Recognised as unlawfully deprived of liberty for exercising freedom of religion

    Memorial: Support for Political Prisoners

  4. · First-instance verdict

    guilty verdict · 17 years

  5. · Added to the Rosfinmonitoring list of “terrorists and extremists”

  6. · Persecution begins

    Marlen Mustafayev's case

Criminal case

Marlen Mustafayev's case

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

Thematic group: Belogorsk "Hizb ut-Tahrir" case

Write a letter

Facility: Prison, Ulyanovsk Oblast

Address (in Russian, as written on the envelope)

433513, ул. Калугина д. 66, Ульяновская область, г. Димитровград, ФКУ «Тюрьма УФСИН Ульяновской области», Мустафаев Марлен Рамисович, 1988 г.р.

Address checked October 18, 2026

Details and sources

Full summary

According to OVD-Info

Resident of Belogorsk (Crimea). Not officially employed, married, has two minor children. On 9 February 2022, detained and on the same day taken into custody on the case of organisation of activities of a terrorist organisation and preparation for violent seizure of power in connection with the alleged involvement in the Islamist party "Hizb ut-Tahrir", which has nothing to do with terrorism. On 30 November 2022, sentenced to 17 years in a strict regime colony.

In June 2023, it became known that before the appeal Mustafayev was given only 15 days to familiarise himself with 7,300 pages of the case.

In 2025, he was deprived of Russian citizenship.

All fields of the record
Citizenship
Ukraine
Sources (1)

Other people prosecuted under Article 205.5 part 1, Russian Criminal Code

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