A pro-democracy group said Sudan’s Rapid Support Forces (RSF) killed at least 22 people in an attack on the city of Al-Fashir in the western Darfur region on Saturday, though the paramilitary force denied launching an assault. The Al-Fashir Resistance Committees said on Facebook that the RSF had fired artillery shells on markets, hospitals and apartments in a surge of violence after weeks of stalemate on that front in the country’s civil war. The activist group also said the RSF used a drone to target a hospital. It later said a total of 97 people were killed or injured in the assault. The RSF…