A six-storey building collapsed in Nairobi's Huruma residential area late on Friday, the Kenya Red Cross said, after days of heavy rains and floods. Three children and one adult had been rescued and taken to Kenyatta National Hospital, the aid group added on its Twitter feed, Reuters reported. . The Daily Nation newspaper reported that scores more were feared trapped. Authorities did not immediately release details on casualties in the area to the northeast of the capital.