French President Emmanuel Macron on Friday said that France was working with Turkey and Greece on a “humanitarian operation” to evacuate people from the devastated Ukrainian city of Mariupol under attack by Russian troops.

“We are going to work with Turkey and Greece to launch a humanitarian operation to evacuate all those who wish to leave Mariupol,” Macron said after an EU summit in Brussels.

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“I will have a new discussion with (Russian) President Vladimir Putin within the next 48 to 72 hours to work out the details and secure the modalities,” he said.

The French President also said that he hoped to “be able to involve the maximum number of stakeholders in this operation”.

He said that he wanted to be “in a position” to conduct the evacuation “in the next few days”.

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The French President further said that his officials had spoken to the mayor of Mariupol and that the 150,000 remaining residents were left trapped in “dramatic conditions”.

Authorities in the city have put the death count in the city at over 2,000, and said Friday that a single strike last week on a theatre where civilians were sheltering was feared to have killed 300 people.

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Russia has made the port city a major focus of its brutal onslaught on Ukraine as it tries to link up the annexed Crimea peninsula with Moscow-controlled areas in the east.

The Kremlin’s devastating attack on Mariupol has drawn parallels with the bombardments by Russian forces that flattened Chechen capital Grozny and Syria’s Aleppo.