Kalinin Sergey Grigorevich

In the occupied Luhansk region, in April 2024, 39-year-old Sergey Kalinin, a native of Ivanovo, was arrested. He was charged with assisting in terrorist activity. Details of the charges are unknown.

According to Sergey himself, he was accused of attempting to recruit someone to go with him to fight in Ukraine as part of the 'Russian Volunteer Corps.' However, Kalinin claims that he does not personally know the alleged recruit. Under pressure, he provided a confession.

During the investigation, the man was placed in custody.

Later, the charges against Kalinin were tightened — an article for state treason was added, and the case was separated into a separate proceeding.

According to the FSB, Kalinin, who was negatively disposed toward the military operation, entered into correspondence on the Telegram messenger with a representative of Ukrainian special services and offered his assistance in intelligence gathering on the territory of the Ivanovo region. In April 2024, acting on the instructions of Ukrainian security forces, he obtained the coordinates of one of the Russian Ministry of Defense facilities in the region and transmitted them to the enemy for use against Russian armed forces. Additionally, according to the circumstances of the second count against him, the man was involved in persuading citizens to participate in a terrorist organization that is engaged in combat operations on the side of the enemy.

On September 2, 2025, the 2nd Western District Military Court found Sergey Kalinin guilty of assisting in terrorism and sentenced him to 10 years in prison, 3 of which he must serve in a prison facility, and the remainder in a maximum-security colony.

On August 28, 2026, the Appellate Military Court upheld this verdict.

On October 15, 2026, the Ivanovo Regional Court found Sergey Kalinin guilty of committing state treason and sentenced him to a final penalty of 18 years in prison, the first 5 years of which he must serve in a prison facility, and the remainder in a maximum-security penal colony. Additionally, he was fined 500,000 rubles and placed under one year of restricted freedom.