Detention: In October 2022, Russian FSB officers detained Artem Dyachkin and initiated a criminal case against him on charges of 'state treason' (Article 275 of the Russian Criminal Code) and illegal acquisition, storage, and carrying of explosives. The Russian side alleged that he collaborated with Ukrainian intelligence services and transmitted information about Russian military facilities. The defense and Ukrainian human rights advocates emphasize that the case is politically motivated, and independent verification of the investigation materials is impossible due to the closed nature of the proceedings.

Sentence: In 2023, a Russian-controlled court in Sevastopol found Artem Dyachkin guilty and sentenced him to 16 years of imprisonment. In April 2026, the appellate court upheld the sentence. According to the Crimean Tatar Resource Center, after several complex surgeries, Artem Dyachkin's health significantly deteriorated, requiring constant medical supervision and treatment. Human rights advocates stress that the lack of adequate medical care poses a serious threat to his health.

Artem Volodymyrovych Dyachkin is a Ukrainian citizen residing in the temporarily occupied Akyar (Sevastopol). Before his detention, he worked in the civilian sector and lived with his family.

During the trial, the hearings were largely held in a closed format, preventing independent observers from verifying the evidence underlying the conviction. Human rights advocates emphasize that the closed nature of the proceedings and restricted access to case materials prevent adherence to fair trial standards.

According to family and human rights advocates, while in custody, he underwent several surgeries, and his health significantly deteriorated. Despite the need for constant medical supervision, he does not receive adequate treatment. Human rights organizations stress that the lack of timely medical assistance may threaten his life and health.

As of July 9, 2026, Artem Dyachkin continues to serve an unlawful sentence in the Russian Federation's penal system.

Information sourced from open sources: Crimean Tatar Resource Center, Office of the President of Ukraine in the Autonomous Republic of Crimea, Human Rights Center ZMINA, CrimeaSOS.

Update date: 09.07.2026.