Two issues, inherited from his predecessors, marked his episcopate: the Herzegovina Affair and the question of the alleged apparitions in Medjugorje. Regarding the first issue, the division of parishes between the Franciscan Province of Herzegovina and the diocese, Perić insisted on the implementation of Romanis Pontificibus, which decreed that Franciscans are ought to handover several parishes in Herzegovina. The parishes in question remained occupied by the Franciscans, with friars holding them being expelled from the Franciscan Order and banned from doing their priestly duties. Regarding the alleged apparitions in Medjugorje, Perić remained firm in expressing the official position of the Catholic Church and his predecessors, that nothing supernatural occurred in Medjugorje.
