Earlier, security guard John Lomayan, 34, described seeing someone he recognised in the industrial neighbourhood of Grogan who was trapped beneath a car that had been washed away when the Nairobi River burst its banks.
“I saw him being carried by the water from up there,” he told Reuters news agency, gesturing up the road.
“We didn’t know where he had gone. It is only now that we see him under the car.”
Key roads in the capital city, including Mombasa Road, Uhuru Highway, Kirinyaga Road, and parts of the Westlands district, have been submerged underwater.
Stalled vehicles and fast-moving floodwaters created havoc, Reuters said.