A <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Parcel_bomb" id="mwyA" rel="mw:WikiLink" title="Parcel bomb">parcel bomb</a> sent by <a href="https://en.wikipedia.org/wiki/Ngô_Đình_Nhu" id="mwyQ" rel="mw:WikiLink" title="Ngô Đình Nhu">Ngô Đình Nhu</a>, younger brother and chief adviser of <a href="https://en.wikipedia.org/wiki/South_Vietnam" id="mwyg" rel="mw:WikiLink" title="South Vietnam">South Vietnamese</a> President <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Ngô_Đình_Diệm" id="mwyw" rel="mw:WikiLink" title="Ngô Đình Diệm">Ngô Đình Diệm</a>, fails to kill King <a href="https://en.wikipedia.org/wiki/Norodom_Sihanouk" id="mwzA" rel="mw:WikiLink" title="Norodom Sihanouk">Norodom Sihanouk</a> of <a href="https://en.wikipedia.org/wiki/Cambodia" id="mwzQ" rel="mw:WikiLink" title="Cambodia">Cambodia</a>.