The Interior Ministry's inspectorate is investigating high-profile police officers who are believed to have helped criminals, the Sme daily reported.
The information regarding the potential collaboration surfaced during the trial, in which controversial businessman Marian Kočner and ex-head of the private TV Markíza network, Pavol Rusko, stand accused of forging promissory notes worth €69 million.

One piece of evidence presented to the court was the transcription of a communication between Kočner and Norbert Bödör, a son of the Nitra oligarch who owns the Bonul security service company.