At least 13 people, including eight children, were killed when a drone hit a house in the Sudanese city of el-Obeid, according to the Sudan Doctors' Network. Most victims were from the same family. The medics accuse the paramilitary Rapid Support Forces (RSF) of carrying out the strike in an army-controlled area, which the RSF has tried to take over for months. The civil war between Sudan’s army and RSF rebels is nearing its third year. The UN calls it the world’s worst humanitarian crisis, with more than 11 million people displaced and hundreds of thousands killed. Both sides face accusations of using sexual violence and committing atrocities. Witnesses say the drone hit a residential neighborhood. The Sudan Doctors' Network said the attack "reflects a dangerous escalation of the policy of indiscriminate killing and systematic bombing of safe residential areas." El-Obeid remains under army control, but is important because it lies between Sudan’s capital Khartoum and Darfur, where the RSF runs a parallel government and faces genocide charges. The strike followed a recent RSF attack on a power plant in el-Obeid and an attempted drone strike by the RSF on Sudan’s largest hydro-electric dam near Merowe, says the army.