Ukraine's military carried out an attack on the Russian city of Yaroslavl overnight on July 6, reportedly striking the city's oil refinery, Russian Telegram media channels reports.
Photos and videos posted to social media by local residents purports to show smoke billowing out of the area of the oil refinery.
The extent of the damage caused was not immediately clear. Although it was not immediately clear as to what weaponry was used in the reported strike, Kyiv's forces often target oil refineries with domestically-produced long-range drones.
The Kyiv Independent cannot immediately verify the reports. Ukraine's military has not yet commented on the reported strike.
The Yaroslavl Oil Refinery, located approximately 250 kilometers (150 miles) northeast of Moscow and approximately 700 kilometers (435 miles) from Ukraine's border, has often been a target of Ukrainian attack. The most recent attack on the refinery occurred just one week prior on June 28.
Kyiv considers energy facilities to be valid military targets, as the energy sites provide fuel and funding for the Kremlin's war machine.
Ukraine has been waging an increasingly successful deep strike campaign against Russian oil infrastructure, disrupting production at major facilities and in some cases halting operations indefinitely.