UNITED NATIONS-Secretary-General Ban Ki-moon Monday said on Monday he was working with donors to raise more contributions to meet a funding shortfall in UN programmes to meet the humanitarian needs of displaced persons in Pakistans north-west. 'Were working very hard, he told reporters at UN Headquarters in New York. 'Im deeply concerned over the situation. His remarks followed last weeks statement in Geneva by a senior UN official, who said Pakistan was facing a humanitarian funding crisis. 'Food and health, clean water supplies and sanitation are at risk because of inadequate funding, said Martin Mogwanja, UN humanitarian coordinator for Pakistan. In February, the UN appealed for 537 million US dollars in emergency funding. To date, it has only received 141 million dollars, or 26 per cent. In light of the budget shortfall, Mogwanja said services will be cut. 'Making cuts is very, very difficult because the community were trying to serve is a community of IDPs who have left behind everything and who have nothing where they have been displaced, Mogwanja said. 'Survival is the most pressing priority. Since April of last year, anti-militant military operations have caused almost 3.5 million Pakistanis to flee their homes, according to the UN. Of that number, nearly 2 million have returned to their communities. That leaves 1.5 million still in need, he said. Asserting that he is trying to be fair in the Korea crisis, UN Secretary-General Ban Ki-moon said the Security Council would take 'appropriate measures to deal with the situation arising from the alleged sinking of a South Korean naval ship by North Korea. 'Im confident that the Council, in fulfilling its responsibility for the maintenance of international peace and security, will take measures appropriate to the gravity of the situation, Ban, who hails from South Korea, told a news conference. 'I do hope that the Councils prompt action will also contribute to the early resumption of the six-party talks to address nuclear issues and other outstanding concerns, he said. Ban said that the international community could not ignore the results of an international investigation, which accused North Korea of torpedoing the Cheonan corvette in March, killing 46 sailors in one of the deadliest clashes between the two since the 1950-53 Korean War. 'Such an unacceptable act by the DPRK (North Korea) runs counter to international efforts to promote peace and stability in the region, Ban said. He added that the United Nations would continue delivering humanitarian aid to impoverished North Korea.