Russian firefighters on Thursday battled for a second day to put out a blaze caused by a Ukrainian drone strike on an oil depot.
Kyiv hit the depot in the city of Engels, some 500 kilometers (310 miles) from the two countries’ border, in Russia’s southern Saratov region on Wednesday.
Moscow has said that two fire firefighters died trying to extinguish the blaze.
Hours after the drone strike, Russia bombed the Ukrainian city of Zaporizhzhia, killing at least 13 people and wounding more than 100.
“Emergency services are continuing to put out the consequences of the drone attack,” Saratov governor Roman Busargin said on Telegram.
“Specialists say that it will take some time to complete the burnout process,” he added.
Busargin said there was “no threat” to residential buildings.
Russia declared an emergency situation in Engels on Wednesday.
Images on social media showed a giant plume of smoke rising over the city, which has a population of around 220,000.
Ukraine has hit Russian infrastructure – sometimes deep behind the front lines – throughout Moscow’s offensive.
It has said that hitting the depot will cause “serious logistical problems” for Moscow’s air force.
Hours after the drone strike, Russia struck Zaporizhzhia, a southern Ukrainian city close to Moscow-occupied territory, killing 13 people.
Kyiv on Thursday said that 113 people were also wounded in the Zaporizhzhia strike, in an updated toll.
Russian attacks on the southern Kherson region killed two people on Thursday, Ukrainian officials said.
Prosecutors said the attacks killed a 54-year-old man in the village of Beryslav – on the Dnipro river that marks the front line – and a 60-year-old woman in Nezlamne, west of the city of Kherson.
The conflict in Ukraine – nearing its three-year mark – has escalated in recent months, with both sides seeking to gain an advantage ahead of Donald Trump returning to the US presidency.
