On 6 June 2014, Košić was among the people on Zagreb Airport who have welcomed convicted war criminal Dario Kordić after his release from the Graz-Karlau Prison where he served 25 years sentence for war crimes committed against the Bosniak population during the 1992–94 Croat–Bosniak War. After media in Croatia and Bosnia and Herzegovina, the Islamic Community of Bosnia and Herzegovina as well as some NGOs expressed their dismay of Košić's act, he gave an interview for "Sarajevo Catholic Weekly" magazine in which he stated that he doesn't believe that Kordić was a war criminal, but was rather a victim of political games regardless of ICTY verdict and all evidences that it was based on.