Three children and one adult have so far been rescued by the Kenya Red Cross team at the site of a residential building that collapsed in Huruma, Nairobi late Friday night following downpour in the city.
The four people have been transported to the Kenyatta National Hospital for treatment.
Speaking to the Nation on phone, the Kenya Red Cross communications manager Arnolda Shiundu said 'it was a complete building collapse' and that the scene on the ground is chaotic as crowds build up around and on the rubble.
Ms Shiundu said the security services are onsite to restore order and help ensure the safe retrieval of trapped residents.
Many people are feared trapped, possibly killed, in the collapsed six-storey building that is located in Ngei Ward in Mathare Constituency.
According to the Kenya Red Cross Twitter account, over 150 people are out in the cold and have sought shelter at the chief's camp.
Kenya Red Cross search and rescue team is onsite but has yet to confirm reports of any fatalities.
Three people died earlier in the city when a perimeter wall on Lenana Road collapsed on them as they shielded from the rain.
Three more people were injured in the freak accident and taken to the hospital.
Kilimani police chief, Peter Katam, said the wall of the house between the Russian Embassy and Department of Defence came down during the heavy downpour that rocked the city
Police said the dead were two men and a woman. Their identities are yet to be established.
Nairobi was hit by heavy rain and thunderstorms Friday.