May 10 (UPI) -- More than 40 people were killed in Kenya when a dam broke after weeks of heavy rains, authorities said Thursday.
At least 42 people have died and many others are missing.
Search efforts resumed after daybreak Thursday as officials hope to find those missing, who may be trapped in the mud and debris after collapse of the dam in Subukia late Wednesday.
Noellah Musundi, a spokeswoman for Kenya Red Cross, said about 450 homes have been destroyed.
Officials said floodwaters swept away power lines, homes, buildings and a school. At least 41 people were rescued, the Red Cross said.
Some residents said they heard an explosion before the dam collapsed and water swept away hundreds of homes.
About 200 Kenyan soldiers were called in to help with search and rescue efforts.
WATCH: Tragedy in Nakuru county as 27 die so far after Patel dam in Solai burst its banks. pic.twitter.com/XAW7UJXEr0— Pulse Live Kenya TV (@pulseliveKETV) May 10, 2018
The dam was one of three owned by an irrigation farmer who was not in the area when it broke. Authorities are trying to learn if the farmer was licensed to build the dams, and are now concerned about the conditions of the other two.
Heavy rains have fallen in Kenya for about a month, causing flooding that's already killed at least 100 people and displaced 260,000. The floods have also contaminated water sources and destroyed health centers, homes, crops, irrigation systems, farm equipment, roads and train lines.