The U.N. agency for refugees has received only a fraction of the funds it needs to help millions of people to return home after the end of Sudan's north-south civil war, officials said on Sunday. Wendy Chamberlin, deputy U.N. High Commissioner for Refugees (UNHCR), said there was a danger donor countries would not deliver promised funds because the world was focused on helping countries hit by the Asian tsunami crisis. "We've received $3.6 million out of an initial appeal for $30 million, but we anticipate that the needs will be $60 million by the end of the year," Chamberlin said during a visit to Sudan. But she expressed confidence that donors would come through at a conference for Sudan in Norway, due to be held in April. The civil war claimed more than 2 million lives and forced around 4 million from their homes. Most settled in other parts of Sudan, an estimated 600,000 fled the country. --More 1836 Local Time 1536 GMT