European Council chief, Charles Michel has announced that the European Union has agreed on a partial ban on Russian oil imports.

Michel in a tweet on Monday evening, announced that “Agreement to ban export of Russian oil to the EU. This immediately covers more than 2/3 of oil imports from Russia, cutting a huge source of financing for its war machine.”

Michel’s announcement followed an extraordinary European Council summit attended by EU leaders in Brussels on Monday to discuss a sixth package of sanctions against Russia, CNN reports.

“This sanctions package includes other hard-hitting measures: de-Swifting the largest Russian bank Sberbank, banning 3 more Russian state-owned broadcasters, and sanctioning individuals responsible for war crimes in Ukraine,” Michel added.

By the end of the year, the leaders of the European Council said the EU agreed to ban 90 percent of Russian oil imports.

President of the European Commission also revealed in a press conference that Russian oil delivered by tankers would be banned, while an exemption will be made for the southern segment of the Druzhba pipeline.

On Tuesday, EU leaders will meet again in Brussels to discuss the bloc’s response to Russia’s invasion of Ukraine.