The storm slammed in to the province of Cabo Delgado on Thursday, killing five people, and has since then pounded an area prone to floods and landslides with rain, fueling fears rivers could burst their banks and leave vast areas under water.
It was raining heavily in the provincial capital of Pemba on Sunday, which had until now been spared from severe damage and a number of neighborhoods were now flooded, Saviano Abreu, spokesman for the U.N. Office for the Coordination of Humanitarian Affairs (OCHA) in southern and eastern Africa said.
"There are already people in need of search and rescue," he said, adding a team was on their way to the neighborhood of Natite, in the city's north. "We unfortunately are expecting devastating floods in Pemba."
Aid workers were currently working to assess the scale of the flooding both in Pemba and the surrounding areas, where there were reports of waist-high water, he continued.