KYIV - Civilians were killed and injured overnight as Russia and Ukraine continued to attack each other with waves of drones. Two people were killed in Russia's Tatarstan, according to local officials, while Ukrainian authorities reported Russian drone attacks on the Black Sea port of Odesa and a fire near a border crossing with Poland. Russia has ramped up its air campaign in recent weeks, using ballistic missiles and jet-powered drones to pierce Ukraine's defenses and capitalize on Kyiv's dwindling stock of missile interceptors. Moscow's attacks have targeted Ukraine's power grid ahead of winter in what officials say is meant to demoralize civilians. Two people were killed and 12 more injured on Sunday as Ukrainian drones struck Nizhnekamsk, a city in Tatarstan, according to the office of regional head Rustam Minnikhanov. The two civilians died after a drone slammed into a tree near their parked car, the statement staid. Nizhnekamsk houses a key cluster of oil refineries and petrochemical, rubber and polymer plants, including some of Russia's largest facilities of their kind. Mayor Radmir Belyaev said that a fire had broken out at one of the city's enterprises, without giving detail. Russian oil pipeline damaged Ukraine's recent long-range strikes have targeted Russia's oil and gas industry, which Kyiv says both funds and directly fuels its war on Ukraine. The Ukrainian drone campaign has caused fuel rationing across Russia, despite the country being a key oil and gas exporter. Other Ukrainian strikes targeted major Russian online retailers, bringing the war ever closer to the public. Ukraine also claimed on Sunday to have hit a major oil refinery in Slavyansk-on-Kuban, in Russia's Krasnodar region, across from Crimea. The Defense Intelligence of Ukraine (DIU) agency said its drones struck a key oil processing unit and the refinery's tank farm overnight, sparking a massive blaze visible from dozens of kilometers (miles) away. Krasnodar authorities said the strike on an enterprise in Slavyansk-on-Kuban injured three people, damaged an oil pipeline and star #clickondetroit #CrimeInTheD ®