The Pentagon watchdog is looking into whether any of Defense Secretary Pete Hegseth’s staffers was asked to delete Signal messages that may have shared sensitive military information with a reporter.

The Defense Department Inspector General is now investigating whether Pete Hegseth attempted to cover up his use of Signal to share sensitive military information. The Army Times reported on Friday that two people familiar with the investigation by the Pentagon watchdog revealed details to the Associated Press about the matter.

The Defense Department’s Inspector General has spent several weeks interviewing Hegseth’s current and former staff members.