United Nations officials are trying to find out who attacked a refugee camp in the east of Democratic Republic of Congo in a raid where several women were raped. The armed men moved on the camp near the city of Goma at night robbing the refugees of personal belongings, clothes and money, and kidnapping some teenagers to carry away the haul. Twelve youngsters later returned. Many of the 30,000 at the camp had fled their homes in Goma when rebel fighters from the M23 group seized the city from government forces almost a fortnight ago. Congolese police and UN peacekeepers have moved back in to Goma promising to make the city safe again. The rebels had withdrawn after a deal was agreed by regional presidents brokered by Uganda. As residents celebrated their departure the Congolese army were expected back in Goma within 36 hours. Peace has been elusive though in this region that is rich in minerals like gold and tin, but racked with ethnic tensions.