Senior Trump administration officials have been accused of using the third-party app to discuss highly sensitive national security information.

The acting inspector general for the Department of Defense announced Thursday that he is investigating Secretary of Defense Pete Hegseth's use of a "commercially available messaging application for official business.

The Pentagon’s acting inspector general will review Defense Secretary Pete Hegseth’s use of the Signal app to coordinate strike plans against Houthi militants, raising security and records concerns.

The use of the Signal messaging app by top Trump officials came to light after The Atlantic's editor was added to a group chat about planned Houthi strikes.

The Pentagon’s acting inspector general announced Thursday that he would review Defense Secretary Pete Hegseth’s use of the Signal messaging app to convey plans for a military strike against Houthi militants in Yemen.

The Pentagon's inspector general launched a probe into the Trump administration's use of Signal to discuss a planned strike on the Houthis in Yemen.

The inspector general review follows revelations that top Trump officials used the unclassified platform Signal to coordinate military strikes in Yemen.

The Pentagon’s acting inspector general announced Thursday that he would review Defense Secretary Pete Hegseth’s use of the Signal messaging app to convey plans for a military strike against Houthi militants in Yemen.