Ad hoc tribunals are ad hoc courts created specifically by the United Nations or 
other international organizations to investigate 
and try serious international crimes, war crimes, 
genocide, and crimes against humanity.These 
tribunals are organized ad hoc, that is, they are 
created for a specific event or time and then cease to operate.
Ad hoc international criminal courts is typically serious international crimes perpetrators These courts were established to deal with serious 
violations of international law, as well as serious 
crimes such as war crimes, crimes against humanity, and genocide. Ad hoc international criminal courts include the International Criminal 
Tribunal for the former Yugoslavia (ICTY) and 
the International Criminal Tribunal for Rwanda 
(ICTR).