A dam failure in Kenya on Wednesday night after heavy rains that caused "great destruction" and killed at least 20 people, officials say.
The break occurred on farmland near the city of Solai, 1
The Kenyan Red Cross says it has saved about 40 people
More than 2,000 people are said to have been homeless. Local officials say that the full extent of the damage is not yet clear.
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Inhabitants say that many more people can not be told.
There are fears that the death toll could increase if the search and rescue operation continues.
The Patel Dam in Nakuru County has broken its walls and swept hundreds of homes downstream, BBC Ferdinand Omondi reports in Nairobi. Witnesses say they heard a loud bang before the waves flowed through almost 2 km (2 miles) of private farmland where many live and work.
"The water has caused a tremendous destruction of life and property, and the extent of the damage remains to be determined," said Lee Kinyajui, governor of the Nakuru district.
The Patel Dam is one of three reservoirs one of the major farmers in the area.
The walls are said to have collapsed due to the high water masses following heavy rains that shook the country.
Local leaders now want to find out if the farmer has received permission to build these dams, as there are concerns about the condition of the two others, which are also reported to be full,
According to official statistics, the number of people who have died nationwide as a result of heavy rains since March is 152.
More than 220,000 people were also destroyed in their homes.