The United Nations International Independent Investigation Commission (UNIIIC) was established on 7 April 2005 by Security Council Resolution 1595 to investigate the assassination of former Prime Minister of Lebanon, Rafic Hariri, who had been killed in Beirut on 14 February 2005.
[1] On 13 May 2005 Secretary-General Kofi Annan appointed German judge Detlev Mehlis to lead the Commission.
Five days later, on 15 December 2005, the Security Council voted unanimously to extend the investigation for another six months to 15 June 2006.
On 11 January 2006 Secretary-General Kofi Annan appointed Belgian Serge Brammertz to replace Mehlis.
[3] The UNIIIC mandate ended on 28 February 2009 and it was superseded by the Special Tribunal for Lebanon on 1 March 2009.