At least 5,000 people in southern Sudan have fled food shortages and attacks by the rebel Lord's Resistance Army (LRA) and sought refuge in northwestern Uganda since January, the Office of the UN High Commissioner for Refugees said. "[Some] said they were running away from LRA attacks, while the majority have fled their camp of Nimule in southern Sudan to Arua in Uganda due to food shortages, as relief supplies to the camp stopped some time back," spokeswoman Roberta Russo said.