A Russian army camp inside the Russian territory, specifically near the city of Belgorod, was struck by Ukrainian Army.
The video, published by local Belgorod news agencies, appears to indicate that an ammunition depot may have exploded, but this has not yet been confirmed.
Tass reports that four people were injured in the blast.
The governor of Belgorod said earlier in the post that the blasts occurred near the village of Krasny Oktyabr, about 30 km southwest of Belgorod, but did not give any information at this time about the cause of the explosions.
Belgorod is located near the Russian-Ukrainian border, 80 km north of the Ukrainian city of Kharkiv.