US federal regulators and more than 45 state prosecutors have sued Facebook, accusing the social media company of taking illegal actions to buy up rivals and stifle competition.
The US Federal Trade Commission (FTC) and a coalition of US states are suing the social network firm on the grounds it has abused its market power.
Officials are asking the court to consider breaking up the company, which also owns Instagram and WhatsApp.
Facebook has previously defended its actions.
Officials said the lawsuits were focused on Facebook’s 2012 acquisition of Instagram, 2014 purchase of WhatsApp and rules governing outside software developers.
“No company should have this much unchecked power over our personal interaction and social interactions,” New York Attorney General Letitia James said. “That’s why we are taking action today.”
Its “predatory acquisition” of companies had sapped confidence in the market, he added
The FTC said the action would seek an injunction that “could, among other things: require divestitures of assets, including Instagram and WhatsApp.”