Reservist Sgt. Maj. Alexander Filin was killed in combat, the army said. The incident also left seven fighters wounded.
Among the wounded were one combat officer, one reserve combat officer, and another reserve fighter in moderate condition. In addition, a combat noncommissioned officer, two reserve fighters, and a reserve female soldier were lightly injured.
All of the wounded were evacuated to hospital for medical treatment, and their families were informed. No further details about the location or circumstances of the battle were released in the report.