Russian regions came under drone attack during the night of August 1, with reports from Ufa indicating black smoke rising over the Bashneft-Ufaneftekhim oil refinery.
The Telegram channel ASTRA reported the incident in a post, according to Ukrinform.
The media outlet said local residents reported drone attacks and explosions. Monitoring channels had also warned of a drone threat in Russia's Republic of Bashkortostan.
Regional head Radiy Khabirov said the drone attack on Ufa had been repelled and that smoke in the industrial zone resulted from falling drone debris.
"Debris from a downed drone fell within the industrial zone, causing smoke. All emergency services are on site and are promptly dealing with the consequences. There are no fatalities or injuries," Khabirov said.
