More than 150 people were killed and hundreds more were missing Sunday after Cyclone Idai swept through southeastern Africa.

The United Nations estimates more than 1.5 million people in Mozambique, Malawi and Zimbabwe were affected by the storm. Tens of thousands have been cut off from roads and telephones in mainly poor, rural areas.

The cyclone made landfall Thursday near the coastal city of Beira, Mozambique, with winds of nearly 200 kph. The storm then moved west into Malawi and Zimbabwe.

"Tropical Cyclone Idai … has compounded destructive flooding that has already occurred as far inland as southern Malawi and eastern Zimbabwe," World Food Program spokesman Hervé Verhoosel told journalists in Geneva.

The U.N. said about 122 people had died in Mozambique and Malawi. Zimbabwean officials on Sunday confirmed 65 deaths.

In Zimbabwe's eastern Chimanimani district, soldiers on Sunday helped rescue 200 students and staff from a school that was cut off by floodwaters and mud.

The presidents of Mozambique and Zimbabwe cut short their overseas trips to deal with the aftermath of the cyclone.

U.N. agencies and the International Red Cross are helping with rescue efforts, while also delivering food, water and medicines by helicopter. (VOA)

•Tropical cyclone Idai is seen gathering over central Mozambique, before moving southwest toward Zimbabwe, March 15, 2019.