Videos showed fireballs over a facility in Ryazan, 110 miles southeast of Moscow. Kyiv is seeking to disrupt Russian military logistics and put pressure on the country’s economy by striking its oil industry.

The unmanned aircraft carrying explosive warheads are part of a Ukrainian campaign of long-range drone attacks that aim to inflict blows on Russia far behind the front line as Moscow's troops advance in the east.

Officials in Ukraine say Russia launched a barrage of drones in an overnight attack Friday, killing at least two civilians, wounding several others and damaging commercial and residential buildings. The Interior Ministry said two victims were killed by drone debris in the central Kyiv region.