Image source, EPA
The UN says more than 40,000 have been forced from their homes
Roads have turned into rivers in the Kenyan capital Nairobi, as a top official said flooding had "escalated to extreme levels".
Heavy rain has pounded Kenya in recent days, causing widespread devastation.
The UN says that at least 32 people have lost their lives and more than 40,000 have been forced from their homes because of the rain and flooding.
Edwin Sifuna, who oversees Nairobi county, posted footage showing an entire neighbourhood flooded.
In the clip, residents can be seen trapped on the roof of their homes.
"The situation in Nairobi has escalated to extreme levels. The County Government for all its efforts is clearly overwhelmed. We need all national emergency services mobilized to save lives," he said.
Image source, EPA
Image caption,A man in Nairobi is submerged in water as he swims to rescue stranded residents who were trapped in their homes
Hundreds of others in Nairobi and nearby areas were marooned by floods following heavy rain overnight.
Local media reported that residents of the Mathare slum had been forced to sleep on rooftops overnight.
Major highways have been submerged by floodwater, causing traffic jams across the country.
"The city is at a standstill because most roads are flooded," Uber driver Kelvin Mwangi told the AFP news agency in Nairobi.
Image source, National Police Service
Image caption,A boy was left stranded when flood waters started rising
A five-year-old boy who was left stranded by the flooding was rescued by a police helicopter in Yatta, south of Nairobi, on Tuesday.
"The child, visibly shaken by the ordeal after being stranded for quite a long period, was safely rescued and taken to a nearby hospital for care," the Kenya Red Cross said.
Wider East Africa has also been badly affected by heavy rain in recent weeks.
Nearly 100,000 people have been displaced in Burundi, while at least 58 people have died in Tanzania.
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