At least seven people were reported killed after a seven-storey building in Kenyan capital Nairobi collapsed in heavy rain.Local coverage from the scene showed a crowd gathering at the Huruma residential estate as rescuers dug for survivorson Friday night, BBC reported.Police told Kenya's KTN network that at least 121 people had been rescued.It is unclear how many people are trapped beneath seven floors of concrete.The rainfall has caused landslides, washed away houses and flooded roads.Police told KTN that 14 people died in the Nairobi rains, including those in the collapse. Another four died when a wall toppled over, officials said.Residents said that the building shook violently in the rain before collapsing.