( LEAD ) FM Yun to raise murder of N . K . leader ' s brother at U . N . meetings ( ATTN : ADDS more remarks , photo ) GENEVA , Feb . 27 ( Yonhap ) -- South Korea ' s top diplomat has said he will raise North Korea ' s apparent involvement in the murder by toxic agents of its leader Kim Jong - un ' s half brother during U . N . meetings on human rights and disarmament . Foreign Minister Yun Byung - se told reporters on Sunday in Geneva that the incident added a new dimension to the North ' s violations of human rights and international norms , which deserve more stern actions by the international community . He made the remarks upon arriving in Geneva to attend a U . N . Human Rights Council meeting and the Conference on Disarmament to be held on Monday and Tuesday . " Human rights situations in the North and its violations of many international norms have reached a very serious point , " Yun said . "( Attending the upcoming meetings ) is to raise the issues and draw the strongest - ever response from the international community . " His trip comes amid growing indicators pointing to North Korea ' s involvement in the recent murder of Kim Jong - nam in Malaysia . Yun said the murder amounts to a different level of human rights violations than in the past , adding that he will discuss its implications during the U . N . meeting . In particular , Yun said that he will emphasize in the disarmament talks that a prohibited chemical weapon was used and that the killing in Malaysia is tantamount to a grave violation of a country ' s sovereignty and international norms . Worrying that the threats from the North ' s missile and nuclear programs have become worse than ever , Yun said that the human rights situation in the reclusive state has also come to a point that warrants action from the international community . Seoul usually sends a vice foreign minister to the U . N . meeting , but it was said to have raised the level of the country ' s representative following the revelation by Malaysian police that a VX nerve agent was used in the killing of the estranged brother of the North Korean leader on Feb . 13 . He was killed at an airport in Malaysia after two Asian women allegedly rubbed VX nerve agent on his face . The nerve agent is classified by the U . N . as a weapon of mass destruction . kokobj @ yna . co . kr ( END )