Flash floods triggered by seasonal torrential rains in Sudan’s western Darfur region killed at least 12 people, including children, the U.N. and an aid group said Sunday. Heavy rains started late Friday in the Kass locality in South Darfur province, according to the the U.N. Office for the Coordination of Humanitarian Affairs, or OCHA. Citing Sudan's Humanitarian Aid Commission, OCHA said around 540 people were affected by the flooding, which also destroyed or damaged more than 100 houses in an area inhabited by displaced people.