Oil prices jumped about 2% on Friday on supply fears after a Ukrainian drone attack hit an oil depot in the Russian Black Sea port of Novorossiysk, a major export hub.

Brent crude futures rose $1.24, or 1.97%, to $64.25, while US West Texas Intermediate crude rose $1.25, or 2.13%, to a barrel.

The attack early on Friday damaged a ship in port, apartment buildings and an oil depot in the Russian Black Sea port of Novorossiysk, injuring three crew members of the vessel, Russian officials said.

“Ukrainian drone attacks on the port of Novorossiysk have sparked new fears of oil supply flow disruptions.

As this port is the second largest oil export hub in Russia and comes on the heels of another major attack at Tuapse barely two weeks ago,“ said June Goh, senior oil market analyst for Sparta Commodities.

“The extent of the damage is not yet known, but if the pattern of escalation continues, then there would be a supply curtailment both in crude and product exports out of Russia.”

The gains came after both Brent and WTI fell about 3% on Wednesday, weighed down by an OPEC report saying global oil supply will match demand in 2026, marking a further shift from its earlier projections of a supply deficit.

This week, Brent has gained 0.94% and WTI has gained 0.28%.

The US Energy Information Administration on Thursday reported a larger-than-expected rise in US crude stocks last week, while gasoline and distillate inventories fell less than expected.

Crude inventories rose by 6.4 million barrels to 427.6 million barrels in the week ended on November 7, the EIA said, compared with expectations in a Reuters poll for a gain of 1.96 million barrels.

Investors are also watching the impact of Western sanctions on Russian oil supply and trade flows.

The US imposed sanctions on Russian oil companies Lukoil (LKOH.MM) and Rosneft (ROSN.MM) as part of efforts to bring the Kremlin to peace talks over Ukraine.

The sanctions prohibit transactions with the Russian companies after November 21.

Around 1.4 million barrels per day of Russian oil, or almost a third of the country’s seaborne exporting potential, has been added to stocks held on tankers as unloading slows due to US sanctions against Rosneft (ROSN.MM) and Lukoil (LKOH.MM), JPMorgan said on Thursday.