Rupert Murdoch’s News Corporation accused Facebook and Google of “anti-competitive practices” in one of dozens of submissions to a probe of the tech giants released Thursday by Australia’s competition watchdog.

A total of 57 media companies, advertisers and journalist groups put forward their cases for changes in the operations of the internet titans, the Australian Competition and Consumer Commission (ACCC) reported.

News Corp, the country’s main newspaper group, its main competitor Fairfax Media and commercial broadcasters led the charge in arguing that Facebook and Google’s dominance of digital advertising significantly undermined the news industry.