The U.S. Air National Guardsman accused of leaking classified documents to a small group of gamers had been posting sensitive information months earlier than previously known and to a much larger chat group, according to online postings reviewed by The New York Times.

In February 2022, soon after the invasion of Ukraine, a user profile matching that of Airman Jack Teixeira began posting secret intelligence on the Russian war effort on a previously undisclosed chat group on Discord, a social media platform popular among gamers. The chat group contained about 600 members.

The case against Teixeira, 21, who was arrested on April 13, pertains to the leaking of classified documents on another Discord group of about 50 members, called Thug Shaker Central. His job as an information technology specialist at an Air Force base in Massachusetts gave him top secret clearance.