Six people were killed and five taken to hospital after the upper floor of a building under construction collapsed near Nairobi on Friday, November 13, police said.
The incident occurred in Syokimau, southeast of the Kenyan capital, near the Standard Gauge Railway terminus on Mombasa Road.
Assistant Inspector General of Police Duncan Ochieng, who oversees disaster management, confirmed the death toll to reporters, according to Reuters.
He said five people had been taken to Imara Daima Hospital.
Construction work was suspended at the site.
Nairobi City County emergency responders said preliminary reports indicated that an upper concrete slab gave way, but the cause had not been established.
The Kenya Red Cross initially reported three people rescued and one missing; subsequent reports put the number of survivors at five.
Early emergency updates said the number of workers present was uncertain, prompting a search for possible victims beneath the debris.
Ochieng later said all workers had been accounted for, Reuters reported.
The victims' identities had not been released.
The incident followed an October 23 collapse in Nairobi's Eastleigh neighbourhood, which killed eight people.
The Associated Press reported on November 5 that four people had been pulled alive from the wreckage.
Kenya's Director of Public Prosecutions directed the Directorate of Criminal Investigations on October 26 to examine whether acts or omissions by county officials, developers or construction professionals contributed to the Eastleigh collapse, according to Citizen Digital.
The order called for an investigation, not a finding that any individual or organisation had committed an offence.
In a separate official statement, the prosecutors' office said National Construction Authority regulations require public and private construction projects to be registered before work starts.
The authority can investigate breaches and halt construction, the statement said.
No determination of the cause of Friday's Syokimau collapse had been announced.
The state-run Kenya Institute for Public Policy Research and Analysis has identified poor workmanship, inadequate supervision, substandard materials and faulty designs as broader contributors to building failures in Kenya, according to Reuters.
Those general findings do not establish what happened at the Syokimau site.