Mladic was transferred to that location at the time of presidential elections in Serbia and a NATO summit in Istanbul because of pressure from the international community and fears that he might be arrested and handed over to the International Criminal Tribunal for the former Yugoslavia (ICTY) in The Hague, the Banja Luka-based newspaper said in its Thursday edition.
The source, speaking on condition of anonymity, told the daily that Mladic had been hiding in a huge secret military complex at Han Pijesak, about 50 kilometres northeast of Sarajevo, which served as Bosnian Serb Army General Headquarters during the 1992-1995 war.
The complex, called Crna Rijeka, consists of a maze of underground tunnels and caves with escape routes leading straight into woods, the source said.
NATO-led Stabilisation Force (SFOR) troops searched the complex on July 1, but found no one. SFOR spokesman Marc Hope said at the time that the operation had been launched to find and arrest indicted war criminals.
According to Nezavisne Novine, Chris Percival, spokesman for the newly-established European Force (EUFOR) which took over peacekeeping in Bosnia-Herzegovia from NATO earlier this month, declined to comment on Mladic's alleged stay at Han Pijesak.
I cannot discuss information that is possibly of an intelligence nature. I cannot comment on such allegations, Percival said.
The newspaper further said that Florance Hartmann, spokeswoman for ICTY Chief Prosecutor Carla del Ponte, had also declined to comment on the information that Mladic had been staying at Han Pijesak.