The inspector general of the US Department of Defense has launched an investigation into Pete Hegseth's use of the Signal application to message other top-level officials about military strikes on Houthi rebels in Yemen.

The review started in response to a joint bipartisan request last week from leaders of the Senate Armed Services Committee.

The Pentagon’s internal watchdog notified the defense secretary of a probe into whether he shared classified information last month in a Signal group chat that included a journalist.

The Pentagon’s acting inspector general announced Thursday that he would review Defense Secretary Pete Hegseth’s use of the Signal messaging app to

The investigation will determine if Hegseth improperly discussed operational plans and violated records retention rules.

Defence chief Pete Hegseth and others coordinated March 15 US military strikes in messaging app conversation that included journalist.

The announcement comes after lawmakers voiced concern about whether top national security officials discussed classified information on Signal about a military strike against Houthi rebels in Yemen.

The Defense Inspector General's Office will look into whether the defense secretary improperly shared sensitive information on the commercial app.

President Donald Trump was not a fan of a reporter's question aboard Air Force One on Thursday.The Pentagon's Inspector General announced earlier in the day that it launched an investigation into Defense Secretary Pete Hegseth's use of a Signal group chat to discuss an imminent attack.