The Acting Inspector General (IG) of the US Department of Defence (Pentagon) will probe Secretary of Defence Pete Hegseth's use of Signal in a group chat with other national security officials to discuss military actions against the Houthis.

The Pentagon’s watchdog has launched a probe into Defence Secretary Pete Hegseth’s use of Signal to discuss Yemen airstrikes. The move follows a leaked group chat that mistakenly included The Atlantic’s editor-in-chief.

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.