Texas and nine other states sued Google on Wednesday, accusing it of working with Facebook Inc in an unlawful manner that violated antitrust law to boost its already-dominant online advertising business.

The states asked that the Alphabet Inc-owned company, which controls a third of the global online advertising industry, compensate them for damages and sought “structural relief”, which is usually interpreted as forcing a company to divest some of its assets.

The Texas lawsuit is the second major complaint from regulators against Google and the fourth in a series of federal and state lawsuits aimed at reining in alleged bad behaviour by Big Tech platforms that have grown significantly in the past two decades.

Google called the Texas lawsuit “meritless”. Facebook did not immediately respond to a request for comment.

Wednesday’s action raises the legal stakes for Google, which is expected to face a third antitrust lawsuit from more than 30 attorneys general on Thursday, according to a source familiar with the matter.

Online publishers alleged on Wednesday in a separate antitrust lawsuit that they lost revenue because of Google’s dominance in online ads. Reuters