The first group of ethnic South Sudanese among up to 15,000 camped in crowded conditions in Sudan has begun their journey home. Roughly 400 people, mostly adults, travelled to Khartoum by bus on Saturday (12 May) from a town 300 kilometres south of the capital ahead of a major airlift that had been planned for early Sunday, said Jill Helke, country director for the International Organisation for Migration.