On 14 February 2019, detained in Krasnogvardeyskiy district of Crimea and the next day taken into custody by court order on charges of participation in the activities of a terrorist organisation due to alleged involvement in the Islamist party Hizb ut-Tahrir. On 3 November 2020, he was sentenced to 13 years in a strict regime colony. On 16 April 2021, the court of appeal instance returned the case to the court of first instance to eliminate procedural violations. On 1 November, the verdict was confirmed. In September 2023, it became known that Abkhairov was not counted the time spent in custody before the sentence came into force against his time in prison: according to Abkhairov's own calculations, he should have already been transferred from prison to a strict regime colony. In June 2024, it turned out that he had spent two and a half months longer in prison than he should have due to an error in the court ruling.