According to Mr Pius Masai, the deputy director National Disaster Management Unit (NDMU), one person was found dead in the debris of Huruma Estate, a residential estate in Nairobi, while another died on the way to hospital. Three others have been hospitalised.
Mr Masai said many of the tenants of the ill-fated building left when it developed cracks shortly before midnight on Saturday.
But he said, the exact number of occupants had not been established.
Huruma Estate is a residential estate located in the northeast of Nairobi, the capital of Kenya.