It’s a more extensive use of the app than previously reported and sheds new light on how commonly the Trump administration’s national security team relies on Signal.

The team led by U.S. President Donald Trump's national security adviser, Mike Waltz, set up at least 20 group chats on the commercial Signal app to coordinate official work on issues involving China,

The inquiry will examine whether the Pentagon chief violated the agency’s standards for sharing classified information.

The senior Republican and Democrat on the Senate Armed Services committee requested the probe after Hegseth disclosed sensitive on Signal.

The Pentagon’s acting inspector general has announced that he will review Defense Secretary Pete Hegseth’s use of the Signal messaging app to convey plans for a military strike against Houthi militant