The woman's daughter and son are in a stable condition after being pulled from the debris in a poor neighbourhood near Nairobi's international airport, southeast of the Kenyan capital.
"Unfortunately one female adult, believed to be the mother of the rescued children, succumbed to the injuries while undergoing treatment at the hospital," said Pius Masai, National Disaster Management Unit spokesman, who is coordinating the search and rescue mission after Monday night's tragedy.
The incident has renewed criticism over unregulated construction in the city of more than three million people.
Police and local residents said the authorities were alerted on Monday after cracks appeared in the building, sparking an emergency evacuation before it collapsed two hours later.
Officials said they evacuated most residents, but at least two people are still feared to be missing, according to the Red Cross.
In all, 128 tenants have been accounted for, but it was not immediately clear how many people lived in the building.
Several buildings have collapsed in recent years in Nairobi and other Kenyan cities, where a property boom has seen buildings shoot up at speed, often with little regard for regulations.
In April 2016, 49 people died when a six-storey building collapsed in a poor neighbourhood northeast of the capital after days of heavy rain caused floods and landslides.
The building, constructed two years earlier, had been slated for demolition after being declared structurally unsound.
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
