Flooding in Sudan has killed at least 30 people, left 100 injured and destroyed 25,000 homes, according to the country's interior ministry.
The figures were released on Thursday after flood waters swamped outlying areas of Khartoum, Sudan's capital, with authorities concerned the waters could rise further.
A day earlier, flood waters swept through cities of Omdurman and Kassala, leaving the government struggling to help the thousands of people who have lost their homes.
The floods, caused by the rising waters of the Nile and Gash rivers due to the rainy season, have destroyed hundreds of mud-brick houses in Khartoum.
Authorities fear the Nile will continue to rise, further submerging the lower areas surrounding the capital.
They are also concerned that diseases could break out.
The UN's World Food Programme has launched an emergency relief effort to deliver food to the estimated 20,000 displaced around Kassala, with the UN Mission in Sudan providing helicopters to help deliver the aid.
Egypt has also sent a Hercules plane carrying aid including water purification equipment and tents, Egypt's official Mena news agency reported.