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 militants in Yemen.

The probe will examine whether the defence secretary complied with policy when he used the commercial messaging app.

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.