MOSCOW - Russia's foreign ministry said Thursday that Ukraine had breached a proposed 30-day ceasefire on energy infrastructure by striking a Russian oil depot, according to media reports.

Foreign Ministry spokesperson Maria Zakharova told Russia's Channel One that the United States, which had proposed the ceasefire, was responsible for holding Ukraine accountable for its actions.

Her comments came after a Ukrainian drone attack ignited a fire at an oil depot near the village of Kavkazskaya in Russia's southern Krasnodar region.

A statement released by local authorities on Thursday evening noted that efforts to contain the fire were ongoing.

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US President Donald Trump held separate phone conversations with Russian President Vladimir Putin and Ukrainian President Volodymyr Zelensky earlier this week. According to White House statements, Trump and Putin agreed that "the movement to peace will begin with an energy and infrastructure ceasefire," while Trump and Zelensky "agreed on a partial ceasefire against energy."

The Ukrainian side also accused Russia of violating its pledges. Hours after Putin's phone call with Trump, Zelensky said there had been "hits, specifically on civilian infrastructure," including a hospital in Sumy.

Late on Thursday, Russian forces launched a mass drone attack on Ukraine's Odesa, injuring three people and damaging an apartment building and a shopping center, according to the regional governor.