New York is leading a group of states in a Facebook antitrust investigation and the states plan to sue the tech giant next week, Reuters reported Thursday, citing unnamed sources.

The state-led complaint would be the second major lawsuit filed against a major tech company in the U.S. this year, following the Justice Department’s lawsuit against Google in October.

More than 40 states plan to sign the lawsuit, a source told Reuters. The source did not name which states will be part of the effort.

Spokespeople for Facebook and the New York attorney general’s office declined to comment to Reuters, and the spokespeople did not immediately respond for comment when contacted by The Hill.

Details of what the states plan to include in the complaint is not known, Reuters reported.