A Ukrainian drone attack caused two oil tanks to catch fire at an oil depot in Sochi in southern Russia, but the blazes were later extinguished, local authorities said on Sunday.
Veniamin Kondratyev, the governor of the surrounding Krasnodar region, said more than 120 firefighters were deployed.
The Russian defense ministry said its air defence units destroyed 93 Ukrainian drones overnight, including one over the Krasnodar region and 60 over the waters of the Black Sea.
The ministry reports only how many drones its units destroy, not how many Ukraine launched.
Rosaviatsia, Russia's civil aviation authority, briefly halted flights at Sochi's airport before resuming them.
There was no immediate comment from Ukraine, which has staged frequent attacks on infrastructure inside Russia that Kyiv deems key to Moscow's war efforts.
A woman was killed in the Adler district of Sochi in a Ukrainian drone attack late last month, but attacks on the city, which hosted the 2014 Winter Olympic Games, have been infrequent in the war that Russia launched in February 2022.
The Krasnodar region is home to the Ilsky refinery near the city of Krasnodar, among the largest in southern Russia and a frequent target of Ukraine's drone attacks.
Also on Sunday, the governor of Voronezh region in southern Russia said four people were injured in a Ukrainian drone strike that caused several fires, while Russia launched a missile attack on Kyiv, according to the military administration of the Ukrainian capital.
The Russian defense ministry said that its units destroyed 18 Ukrainian drones over the Voronezh region that borders Ukraine.
