The IRM was established by the United Nations Security Council (UNSC) Resolution 1966 (2010) to finish the work begun by the ICTR and International Criminal Tribunal for the former Yugoslavia (ICTY).
Taasisi hiyo mpya ijulikanayo kama Mfumo wa Kimataifa wa kumalizia Mashauri Masali (international Residual Mechanism for Criminal Tribunal)ya iliyokuwaMahakama ya Kimataifa yaJinai ya Rwanda (ICTR) imejengwa katika eneo la Lakilaki nje Kidogo ya Jiji la Arusha.