The Massachusetts Air National Guardsman accused of leaking highly classified military documents will be arraigned in federal court on Wednesday.

Jack Teixeira, 21, has been charged under the Espionage Act with unauthorized retention and transmission of classified national defense information.

He has not yet entered a plea..

Teixeira is accused of sharing highly classified military documents about Russia’s war in Ukraine and other top national security issues in a chat room on Discord, a social media platform that started as a hangout for gamers. The stunning breach exposing closely held intelligence has sparked international concern and raised fresh questions about America’s ability to safeguard its secrets.

The Air Force has also taken away the intelligence mission from the Air National Guard 102nd Intelligence Wing based in Cape Cod, where Teixeira served, pending further review.

Court records unsealed last week revealed how billing records the FBI obtained from Discord and interviews with social media comrades led authorities to Teixeira.

Investigators believe he was the leader of an online private chat group on Discord called Thug Shaker Central, which drew roughly two dozen enthusiasts who talked about their favorite types of guns and shared memes and jokes. The group also held a running discussion on wars that included talk of Russia’s invasion of Ukraine.

A Discord user familiar with Teixeira’s online posts told the FBI that a username linked to Teixeira began posting what appeared to be classified information roughly in December. The person provided the FBI with basic identifying information about Teixeira, including that he called himself “Jack,” claimed to be part of the Air National Guard and appeared to live in Massachusetts, according to the court records.

This is a developing news story; stay with 7NEWS on-air and online for the latest details.

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