Russia reported 936 coronavirus-related deaths on Friday, the largest single-day death toll it has recorded since the pandemic began.
The government coronavirus task force also said it had recorded 27,246 new cases in the last 24 hours, a slight decrease from 27,550 cases a day earlier.
It comes as Russia has repeatedly delayed inspections by the European Medicines Agency (EMA) necessary for the certification of its Sputnik V COVID-19 vaccine in the European Union, the EU's ambassador to Moscow was quoted as saying on Friday.
The Sputnik V vaccine, widely used in Russia and approved for use in more than 70 countries, is undergoing a review by the World Health Organization and the EMA.
Russia has accused the West of refusing to certify its flagship vaccine for political reasons. Without EMA approval, it is harder for Russians to travel throughout the EU.
"This is a technical rather than a political process," EU ambassador Markus Ederer told Russia's RBC media outlet in an interview.
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"When Russian officials talk about the process being delayed and politicised by the European side, I sometimes think they are largely referring to themselves because it is them who makes this about politics."
Russia’s sovereign wealth fund, the Russian Direct Investment Fund (RDIF), markets Sputnik V overseas. It declined to comment.