The UN's top official on North Korea's human rights situation says China's forced repatriation of North Korean refugees contradicts "the principle of non-refoulement,"... which forbids nations from returning asylum seekers to a country where they will face persecution.<br />Speaking at the UN Headquarters in New York on Wednesday,... Tomas (Oh-hay-ah Quin-tan-ah) Ojea Quintana urged Beijing to take discreet measures.<br />He added that he has obtained information that an increasing number of North Korean refugees have been detained in China over the past six months.<br />He also said food insecurity is reaching an alarming level in the North,... with nearly 40 percent of its population, or 11 million people,... undernourished.<br />