Two Ukrainian drones targeted an oil tanker in the Black Sea on Tuesday, the Russian Defense Ministry reported Wednesday. The incident involved the crude oil tanker Matilda, which was commissioned by KazMunayGas (KMG), a Kazakh state-owned oil company, to pick up cargo at Russia’s port of Novorossiysk.

The shipment was part of operations by the international Caspian Pipeline Consortium (CPC), which transports fuel extracted in Kazakhstan through Russia to global markets. Russian military sources stated that the Malta-flagged vessel was attacked approximately 100 kilometers from Anapa, a city in Russia, at around 10:15 a.m. local time on Tuesday.

Earlier Wednesday, online footage purportedly showing a kamikaze drone striking a second tanker, the Delta Harmony, surfaced. Ukrainian officials have declined to comment on the incidents.

Moscow has previously accused Kyiv of deliberately targeting CPC infrastructure within Russian territory as part of its campaign of long-range strikes against Russia. In November last year, following Kazakhstan’s formal protest over disruptions to its exports, Kyiv stated that Russia bears responsibility for any damage caused to foreign nations during Ukraine’s military operations.

Russian officials describe Kyiv’s actions as resorting to terrorist tactics and inflicting harm on third parties not engaged in the Russia-Ukraine conflict.