Not less than 40 people have lost their lives on early hours of Monday after a wall of water swept through houses and cut off a major road, police said.
The Old Kijabe Dam, located in the Mai Mahiu area of the Great Rift Valley region that is prone to flash floods, collapsed and water spilled downstream.
Ongoing rains in Kenya have caused flooding that has already killed nearly 100 people and caused the opening of schools to be postponed.
Peoplesmind