Ivan del Vechio

The location of the weapons cache, according to those involved, would be revealed by the same person who planted it.

This would then justify the previous statements of top Croatian officials such as President Kolinda Grabar-Kitarovic that Bosnia is a "hotbed of terrorism" and home to at least "10,000 radicalized persons".

The Croatian foreign ministry said on Thursday that it will investigate whether its ambassador in Bosnia and Herzegovina, Ivan Del Vechio, attended celebrations of the disputed Bosnian Serb 'statehood day' in Banja Luka, the administrative centre of Republika Srpska, on January 9.

The Croatian Foreign Ministry and the local government of Posavina canton in Bosnia and Herzegovina, where the alleged war crimes were committed, have expressed serious concerns about the arrest of ten former Bosnian Croat fighters.