The Justice Department is expected to launch an antitrust lawsuit against Google as soon as this summer, with a group of state attorneys general planning for a case in the fall, sources told the Wall Street Journal.

Both groups are already invested in planning for litigation. The state AGs, led by Texas Republican Ken Paxton, are thought to be targeting Google’s online-advertising model, while the DOJ’s case will encompass a wider array of issues, including Google’s monetization of its search tool to stifle competition. It is unclear whether the two groups will launch separate suits, or combine forces on a single one.

Scrutiny over Google’s alleged violations has grown since Attorney General Bill Barr highlighted the issue during his confirmation hearing and the DOJ announced an antitrust review