The main hospital in the capital of Ethiopia's northern region of Tigray is "dangerously low" on supplies as it treats the wounded from the fighting around the city, the Red Cross says, APA reports citing CNN.
On Saturday, Prime Minister Abiy Ahmed had said that federal forces had taken control of the city.
He described it as the "last phase" in the three-week long conflict with the Tigray People's Liberation Front.
But the TPLF leader vowed to fight on, in a statement to Reuters.
Few details have emerged from Tigray throughout the fighting as communications have been cut.