The attack, which Ukraine's general staff said took
place on Friday, (19 Dec) is one of a string of strikes targeting Russian
drilling infrastructure in the Caspian Sea in recent weeks, but the first one that the Ukrainian
military acknowledged officially.
A drilling platform of the Filanovsky oil rig was damaged in the attack,
according to the Ukrainian military. The rig came under drone attacks at least
two more times in December.
Reuters was not able to confirm the report. Lukoil
was not available for immediate comment.
Ukraine says that
Russian oil infrastructure is a legitimate target since the trade revenue is
Russia's main source for financing its almost four-year-old full-on war against
the country.