The U.S. Department of Justice has filed an antitrust lawsuit against Google, accusing the tech giant of abusing its monopoly in the ad technology market. The suit is the second antitrust action against the company and seeks to break up its ad business.

The DOJ is alleging that Google has used its dominance in online advertising to illegally stifle competition and harm consumers. The suit claims that Google has used exclusionary contracts and agreements to block rivals from competing and to preserve its monopoly.

Google has faced criticism for its ad tech business for years, with some accusing the company of using its market power to manipulate the market and to charge higher prices.

Google has disputed the allegations and said that its ad tech business is competitive and has enabled innovation. The company said it will vigorously defend itself against the lawsuit.

The suit comes amid a broader push by the DOJ to investigate the tech industry for potential antitrust violations. The DOJ is also looking into Google’s search business, as well as other tech companies such as Apple and Facebook.

The case could have far-reaching implications for the tech industry and could lead to changes in the way the market operates. It is likely to be a long and complicated legal battle, with Google expected to fight the charges.

This story is developing and more information will be provided as it becomes available. For the latest coverage on the DOJ’s antitrust lawsuit against Google, visit USNN.