Kim Jong Nam murder accused Vietnamese national Doan Thi Huong (left), is escorted after a court appearance. Pic/AFP

Tokyo: North Korea is strongly denying the findings of a Malaysian autopsy that suggest the deadly VX nerve agent was used to kill leader Kim Jong Un's half brother or "Kim Chol, a citizen of (North Korea) bearing a diplomatic passport," as its media and officials on the scene insist the victim be called.