President Joe Biden praised federal law enforcement officers for their "rapid action" in identifying and detaining the alleged source of a classified information leak, despite reporters approaching suspect Jack Teixeira first.

"I commend the rapid action taken by law enforcement to investigate and respond to the recent dissemination of classified U.S. government documents," Biden wrote in a statement Friday. "While we are still determining the validity of those documents, I have directed our military and intelligence community to take steps to further secure and limit distribution of sensitive information, and our national security team is closely coordinating with our partners and allies."

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Teixeira, a 21-year-old airman with the Massachusetts Air National Guard's intelligence wing, appeared in a Boston federal court Friday after he was arrested by the FBI in North Dighton, Massachusetts, the previous day. There, it was revealed he has been charged with the unauthorized retention and transmission of national defense information and the willful retention of classified documents. Teixeira has not entered a plea.

The charging document alleges Teixeira held a top secret security clearance in his position as an IT specialist and started posting about classified information on Discord, a social media platform that has become popular with gamers, around December 2022 and posting photos of the records in the invite-only chat room he led in January. Some of the documents pertain to the Ukraine war, including secret U.S. assessments of Ukraine's capabilities.

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Biden was briefed on Teixeira's arrest Thursday, but hours earlier appeared to downplay the leak to reporters traveling with him in Northern Ireland and Ireland.

"I'm not worried about the leak, but I'm concerned that it happened," he said in Dublin. "But I don't know anything there that would be of great importance."