Justice Dept. Said to Conduct New Interviews in Inquiry Into Google’s Ad Tech

The Justice Department has in recent weeks conducted new interviews for its investigation into Google’s ad technology, a sign it may be moving closer to filing its second antitrust case against the company, said three people with knowledge of the matter.

The Justice Department for more than a year has investigated whether Google abuses its dominance over the interlocking technologies that deliver ads online. Its lawyers are now speaking again with publishers and Google’s competitors to gather new material, confirm evidence and test its legal theory ahead of a possible lawsuit, said the people, who were not authorized to discuss confidential matters.

A spokeswoman for the Justice Department did not immediately respond to a request for comment. Bloomberg earlier reported the Justice Department meetings.