Three people have been killed in the border region between Russia and Ukraine, according to officials, as the two sides launched attacks on each other in the latest exchange of fire.

In Russia, two civilians were killed and two wounded in the region of Bryansk after Kyiv struck the settlement of Suzemka with artillery, Acting Governor Egor Kovalchuk said in a post on Telegram on Friday.

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A ⁠drone ⁠also hit an apartment building in Russia’s ⁠central region of Tatarstan, ⁠injuring three people, while industrial facilities were ‌hit, regional head Rustam Minnikhanov said on the Telegram messaging app.

Production work was ⁠not suspended, ⁠however, he added, but did not identify ⁠any plants. ⁠The region ⁠is home to key oil processing and petrochemical ‌facilities, among others.

⁠Russia’s ⁠city of Togliatti, home to ⁠the country’s biggest ⁠carmaker Avtovaz, also came under a drone attack overnight, Samara ‌region Governor Vyacheslav Fedorishchev said on Telegram.

“Attention! Drone attack regime ⁠for Togliatti,” he ⁠wrote. Togliatti is a city ⁠on the ⁠Volga River some 800 km (500 miles) southeast ‌of Moscow.

These strikes are what Ukraine refers to as a “logistics lockdown”, said Al Jazeera’s Audrey MacAlpine, reported from Kyiv. She explained that they are mid-range strikes anywhere over 30 kilometres (17 miles) from the front line, using long-range drones and sometimes heavy weaponry to target things like oil refineries, bridges, logistics, and roads as a means of halting Russia’s front-line operations.

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At the same time, she said, Ukraine also launches what it calls “long-range sanctions” against Russian targets – a “tongue-in-cheek term … that we’ve seen escalating over the past several months, where Ukraine is targeting Russia’s oil refineries and oil industry,” MacAlpine explained.

In Ukraine, a drone attack in the border region of Sumy caused casualties.

A 44-year-old woman working as a rail station operator died on her way to a shelter during the strike, according to the head of Ukrainian Railways, Oleksandr Pertsovkyi.

Another woman, a station attendant, was wounded in the attack, Pertsovkyi added.

Three people were wounded in separate attacks on Ukraine’s southern Mykolaiv region.

“We’ve seen continual threats by Russia before massive attacks, and we have certainly seen the results of those actions here in cities like Kyiv, where ballistics continue to be the Achilles heel for Ukraine”, MacAlpine said.

Russian fuel shortages after Ukrainian attacks

In recent months, Kyiv has carried out an increasing number of attacks on Russia and Russian-occupied territories.

On Thursday, fuel stations on the Russian-held Crimean Peninsula ran out of petrol after a Ukrainian campaign against the peninsula’s supply lines escalated.

A witness in Sevastopol, the peninsula’s largest city, told the Reuters news agency there was no fuel at most local petrol stations, with supplies struggling to keep up with a rationing regime imposed in recent weeks.

Another witness, in the resort town of Yevpatoriya, ⁠said there was a long queue outside the only petrol station open there.

Ukraine has been intensifying drone attacks on supply lines to the peninsula, which Russia seized from Kyiv in 2014. Local authorities have imposed fuel rationing regimes, with some foodstuffs also running short.

Besides Russian-held Crimea, only ‌two regions in Siberia have officially confirmed the shortages.

Most other regions have said the situation is under control, and that some disruptions were caused by panic buying. Moscow has denied there were any problems with fuel supplies.