'Massive' drone attack on Russia's Bryansk Oblast going, explosions reported, governor claims.

Editor's note: This is a developing story and is being updated. Ukraine launched a "massive drone attack" on Russia's Bryansk Oblast, Governor Alexander Bogomaz claimed on Telegram overnight on Sept.

10. The Kyiv Independent cannot verify the claim, and Ukraine has not yet commented on the alleged attack.

Videos of purported explosions heard over Bryansk Oblast were posted on social media by local residents around 12:30 a.m. local time. Bogomaz claimed that 21 Ukrainian drones had been downed by air defenses in the hour since the attack began. Air raid alerts were also active overnight in nearby Lipetsk and Belgorod oblasts.

No information was immediately available as to any damage caused by the alleged attacks. In recent months, Ukrainian forces have increased attacks against targets within Russian territory, aiming to damage Russia's oil industry and military production facilities. Overnight on Sept.

1, dozens of drones reportedly targeted several Russian regions, with Russia's Defense Ministry claiming to have downed 158 drones.

Russia preparing new mass attacks on Ukraine's energy system, PM Shmyhal says

"But we understand that the enemy will not give us the luxury of living in peace," Prime Minister Denys Shmyhal said. "We already have intelligence that the next mass missile and drone strikes on our power system are already being prepared."

The Kyiv IndependentKateryna Denisova