LOS ANGELES, United States (AFP)—California and 11 other US states on Monday sued to block Paramount Skydance’s $110 billion takeover of Warner Bros. Discovery, calling the largest merger in Hollywood history a threat to competition in film and television.

The lawsuit, filed in federal court in northern California, marks a dramatic turn in the regulatory battle over the deal — and a direct challenge to the Trump administration’s Justice Department, which approved the merger last month.

The combined company — which came about after Netflix bowed out of the battle to own Warner — would control a sprawling roster of assets, including CNN, Warner Bros. Pictures and the HBO Max streaming service.