The death toll after a powerful cyclone in Mozambique stood at 217 and around 15,000 people still needed to be rescued, the Minister of Land and Environment Celso Correia said on Thursday.
Correia said 3,000 people had already been rescued.
Cyclone Idai lashed the Mozambican port city of Beira with winds of up to 170 km per hour (105 miles per hour) last Thursday, then moved inland to Zimbabwe and Malawi, flattening buildings and putting the lives of millions at risk.
Winds of up to 170 kph (105 mph) and flooding swept across southeastern Africa, including Zimbabwe and Mozambique, affecting more than 2.6 million people, United Nations officials said on Tuesday.
Rescue crews were still struggling to reach victims five days later, while aid groups said many survivors were trapped in remote areas, surrounded by wrecked roads, flattened buildings and submerged villages. The Red Cross said at least 400,000 people had been made homeless in central Mozambique alone.
"This is the worst humanitarian crisis in Mozambique's history," said Jamie LeSueur, who is leading rescue efforts in Beira for the International Federation of Red Cross and Red Crescent Societies.
The organisation said large areas to the west of the port city of Beira were severely flooded, and in places close to the Buzi and Pungwe rivers flood waters are metres deep, completely submerging homes, telephone poles and trees.
LeSueur had said earlier on Tuesday, when the death toll was 84, that the full human impact of the disaster remained unclear, and that the figure was likely to rise.