The number of people killed in a powerful cyclone and flooding in Mozambique has risen above 200, more than doubling the country’s death toll from a storm that could rank as one of the worst weather-related disasters in the southern hemisphere.

Mozambique’s President Filipe Nyusi said in a televised statement following a cabinet meeting on the disaster on Tuesday that the death toll after Cylone Idai now stood at more than 200, up from 84.

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.