Martić was tried at the International Criminal Tribunal for the former Yugoslavia (ICTY) on several different charges of war crimes including, his involvement in the siege of Kijevo. The trial resulted in a guilty verdict, and the findings of the Trial Chamber regarding Kijevo, made in 2007, were confirmed by the ICTY Appeals Chamber in 2008, based on witness testimonies about it being ethnic cleansing. The siege was the first instance of use of the ethnic cleansing in the Yugoslav Wars.