WASHINGTON—Chief executives of both Google and Facebook were aware of a deal to carve up part of the online advertising market, according to an amended complaint filed by Texas and other states who have filed an antitrust lawsuit against Google.

A Facebook logo is displayed on a smartphone in this illustration taken on Jan. 6, 2020. Dado Ruvic/Illustration/Reuters
The deal with Facebook, which Google called Jedi Blue, was signed off by Google CEO Sundar Pichai while Facebook CEO Mark Zuckerberg was on an email thread discussing it.
Neither company immediately responded to a request for comment.