The United Nations International Independent Investigation Commission was established in April 2005 by Security Council Resolution 1595

United Nations Security Council Resolution 1595

United Nations Security Council Resolution 1595, adopted unanimously on April 7, 2005, after recalling its support for the sovereignty, territorial integrity and independence of Lebanon, the Council established a commission to assist Lebanese authorities in their investigation of the assassination...

 to investigate the assassination of Rafic Hariri, the former Prime Minister of Lebanon

Lebanon

Lebanon , officially the Republic of LebanonRepublic of Lebanon is the most common term used by Lebanese government agencies. The term Lebanese Republic, a literal translation of the official Arabic and French names that is not used in today's world. Arabic is the most common language spoken among...

 on 14 February 2005.

The first report of the Commission was delivered by Detlev Mehlis

Detlev Mehlis

Detlev Mehlis is currently the Senior Public Prosecutor in the Office of the Attorney General in Berlin. He has 30 years of prosecutorial experience and has led numerous investigations into serious, complex transnational crimes...

 on 19 October 2005.

The tenth report of the Commission was delivered by Daniel Bellemare

Daniel Bellemare

Daniel Bellemare is a Canadian prosecutor. After retiring from a long career in the Canadian legal system, Bellemare was named as a prosecutor for the United Nations.-Canadian legal career:...

 in April 2008.

The UNIIIC mandate ended on February 28, 2009 and it was superseded by the Special Tribunal for Lebanon

Special Tribunal for Lebanon

The Special Tribunal for Lebanon is an international tribunal for the prosecution under Lebanese law of those responsible for the assassination of Rafic Hariri on February 14, 2005. The tribunal also has jurisdiction over a series of other attacks in Lebanon if they are proven to be connected...

on March 1, 2009.