Eight people were killed after a six-storey building collapsed amid heavy rain in Nairobi, a regional official confirmed on Saturday.
Rescuers spent Saturday morning trying to reach those trapped under the rubble of the building in the Huruma neighbourhood, Deputy County Governor Jonathan Mueke said.
"This is a very delicate rescue operation," Mueke told reporters at the site of the building that collapsed on Friday night.
"We can still hear some voices from underground and we believe we will reach them in time."
Mueke said 81 people had been rescued so far.
The Kenya Red Cross said its ambulances had taken three children and one adult to hospital. Some 150 households were affected by the collapse, it said on Twitter.
The collapse follows heavy rains in the Kenyan capital that claimed at least three lives when a wall collapsed earlier in nearby Mathare district, local newspapers reported online.