At least three children were among five killed Tuesday when a drone attack hit the Sudanese town of Dilling, local medical sources confirmed.

Several drones fell on the town in the South Kordofan region, according to residents. At least 13 injured were taken to the Dilling hospital, a source at the hospital said.

Sudan's regular army, which has been fighting the paramilitary Rapid Support Forces (RSF) in the three-year civil war, retook Dilling in January after routing the RSF.

The Foreign Ministry Tuesday condemned "systematic attacks" on civilian homes and infrastructure by the RSF in Dilling and the North Kordofan capital of el Obeid and Kosti in White Nile state.

After taking the key city of el-Fasher in Darfur amid bitter fighting, the RSF has been concentrating its attacks on the army in Kordofan.