[6] Media investigations since the trial, such as for the ABC's Four Corners programme and The Sydney Morning Herald newspaper, suggested that much of the evidence on which the six were charged was fabricated and that the men were set up as part a sting operation by the Yugoslav foreign intelligence service, UDBA.
[9] Australian investigative journalist Chris Masters revealed in 1991 that chief witness of the case, known by the name of Vice Vrkez, was actually UDBA's agent Vitomir Misimović, who infiltrated in Croatian community in Australia.
[1] The case also drew attention from John Schindler, then at the US Naval War College, who claimed that the Croatian Six affair was "a 'classic' agent provocateur operation run by the intelligence agency of the then communist regime in Belgrade, known as the UDBA, against exile communities that were against the Yugoslavian federation.
[3] In 2012, three of the surviving five men — Max Bebić, Mile Nekić and Vic Brajković — represented by human rights lawyer Sebastian De Brennan, applied to the NSW Supreme Court for a judicial review of their convictions.
In the final week of the hearings, cross-examination of witnesses focused on Vice Virkez, the man who reported the alleged conspiracy to Lithgow police in February 1979 and who was found to have been in contact with the then-SFRJ consulate in Sydney.