On 17 February 2021, detained and taken into custody on the same day on charges of participation in the activities of a terrorist organisation. On 22 March 2022, he was sentenced to 13 years in a strict regime penal colony. In prison, a Baker's cyst was discovered in his knee joint. Because of the cyst, Seidametov cannot sit or lie down for long periods of time. He also complained to his spouse about hearing loss in one ear.