Kirill was arrested on June 23, 2021, in connection with a criminal investigation into an incident at a Russian Navy communications facility near Vileika. In the ONT propaganda film, he was portrayed as the initial perpetrator of the bombing mission, but he refused to participate and merely assisted in reconnaissance of the area.
Lukashenko mentioned Kirill among the people who allegedly wanted to flee to Ukraine and Lithuania, but were detained by the KGB Alpha group.
It is also known that Kirill was previously detained and severely beaten on August 9, 2020.
In December 2022, he was found guilty and sentenced to imprisonment in a maximum security penal colony and a large fine.
On August 4, 2023, a trial was held to consider changing the sentence. The outcome is unknown .
At the end of autumn 2025, Kirill was transferred to another colony.
In May 2026, it became known that Kirill was being pressured while in prison. In the Mogilev penal colony , he was periodically placed in a punishment cell , later being placed in a cell-type facility. The political prisoner was convicted under Article 411 of the Criminal Code (malicious disobedience to the penal colony administration ). Under the new sentence, he will serve his sentence in Maximum Security Penal Colony No. 9 in Gorki.
Kirill is in very poor health . He has a number of serious illnesses , and at the end of 2025, the political prisoner suffered a minor stroke. According to Viasna, Kirill has not seen his family for three years.
