Speaking to reporters after a symposium on disabled persons in Zagreb, which was attended by some 300 people from Croatia and neighbouring countries, Mesic said he did not know how the transcripts had become public.
The transcripts of a meeting between the late president Franjo Tudjman and Croatian army generals, which took place on the northern Adriatic archipelago of Brijuni prior to Operation Storm in the summer of 1995, have recently been published by some Croatian media.
The transcripts were found in the Office of the President, after which two copies of the minutes of the Brijuni meeting were sent to the Department for Cooperation with International Criminal Courts on October 12. Since the documents were classified, the Department sent them back to the President's Office for declassification.
Some people who participated in the meeting and defence lawyers for indicted generals Ivan Cermak and Mladen Markac have expressed their doubt about the authenticity of the transcripts, which have already been used in the trial of former Yugoslav president Slobodan Milosevic at the Hague war crimes tribunal.
Prime Minister Ivo Sanader said on Monday that the competent authorities had to check how the transcripts had ended up in The Hague.