Mr Simonenko faces up to 10 years in a penal colony.
A woman was reportedly killed in a residential building.
Ukrainian forces were reported to have controlled several Russian towns near the border since an attack on Tuesday.
Members of the Picnic band emerged unscathed and were safely evacuated from the scene.
Several heavy army transport aircraft have been damaged in a drone attack on the airfield of the north-western Russian city of Pskov, according to authorities.
Officials said drones were used to attack a fuel depot and an administrative building in Bryansk, a region of western Russia close to the border with Ukraine.
Russia allegedly promises volunteers monthly pay of 100,000 roubles ($1,625), bonuses, payments to their families in the event of death, and an amnesty.
One of the storage facilities belonged to the oil company Transneft Drushba that exports Russian oil to Europe.
