Newspaper group Robinson Communications (Washington state) is suing Google and Facebook, according to a Western District of Washington complaint, Law Street Media reports.

“Google and Facebook have monopolized the digital advertising market thereby strangling a primary source of revenue for newspapers across the country. This antitrust action is brought to seek all remedies afforded under law,” says the filing.

The plaintiff is represented by Herman Jones LLP, Farrell & Fuller, Robbins Geller Rudman & Dowd, and Fitzsimmons Law Firm, says Law Street Media.