The Justice Department has opened an investigation into major television networks over their decision to suspend pool coverage of President Trump.
Networks received notification on Friday that the department is examining whether the move violated antitrust laws.
The inquiry focuses on whether the networks coordinated their actions when they pulled pool coverage of the president.
Pool coverage allows a small group of journalists to share footage and reports with other outlets.
Suspending that arrangement can limit public access to presidential events and appearances.
Antitrust laws prohibit companies from colluding to restrict competition or control market behavior.
The department has not filed any charges and the investigation remains in its early stages.
Networks have not publicly responded to the notification or commented on the inquiry.
Legal experts say antitrust claims in media coverage disputes are rare and difficult to prove.
The investigation adds to growing tensions between the Trump administration and major news organizations.
