Kenya officials say the flash floods have killed nearly 1,000 farm animals and destroyed thousands of acres of crops, with more rain expected across the country.

At least 32 people have lost their lives and more than 40,000 have been forced from their homes after flash floods caused by days of heavy rains swept through almost half of Kenya, the United Nations says.

Heavy rain has pounded Kenya in recent days, causing widespread devastation. At least 15 people have been injured and two others are missing. Some 103,500 people in all have been affected.

Kenya officials said flooding has killed nearly 1,000 farm animals and destroyed thousands of acres of crops, with more rain expected across the country.

Roads have turned into rivers in the capital Nairobi, as a top official said flooding had “escalated to extreme levels”.

According to the Kenya Meteorological Department, the country registered heavy rain since mid-March, but downpours intensified over the past week, leading to mass flooding. The Kenyan Red Cross Society says it has carried out over 188 rescues since the onset in March.

Some roads in Nairobi were closed on Wednesday and several neighborhoods remained submerged after another day of heavy rainfall.

Senator Edwin Sifuna, who oversees Nairobi county, posted footage showing an entire neighbourhood in the capital flooded.

In the clip, residents can be seen trapped on the roofs 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 mobilised to save lives,” he said.

More than 30,000 people have been displaced in Nairobi, according to the United Nations. The Kenya Red Cross Society said 18 people, including seven children, were stranded on Tuesday, and later rescued after heavy rain.

It added that it was carrying out other “life-saving” operations in other parts of the country.

Two major highways out of Nairobi saw heavy traffic on Wednesday after floodwaters submerged parts of them. The Kenya Urban Roads Authority partially closed four roads that were heavily affected and warned of flooding on two others.

“The traffic police and our technical team are on the ground to direct traffic and enhance the safety of motorists,” it said in a statement.

Kenya Railways suspended commuter train services nationwide. “We are compelled to take these precautionary measures because the safety of our customers is always of paramount importance to us,” the operator said in a statement.

The rains were not expected to subside over the next few days, according to the Kenya Meteorological Department, which had rain in the forecast for parts of the country, including Nairobi, through Monday.