The Justice Department has filed an antitrust lawsuit against Google over its online advertising business, long a dominant presence in the world of internet ads.

"Competition in the ad tech space is broken, for reasons that were neither accidental nor inevitable," the DOJ wrote in the lawsuit. "One industry behemoth, Google, has corrupted legitimate competition in the ad tech industry by engaging in a systematic campaign to seize control of the wide swath of high-tech tools used by publishers, advertisers, and brokers, to facilitate digital advertising."

The lawsuit was filed Tuesday in the U.S. District Court for the Eastern District of Virginia.

Eight states are also included in the filing, including Virginia, California, Colorado, Connecticut, New Jersey, New York, Rhode Island and Tennessee.