Pentagon watchdog opens probe into use of Signal for Yemen attack plans

The Pentagon's Inspector General's office announced on Thursday it was opening a probe into Defense Secretary Pete Hegseth's use of an unclassified commercial texting application to coordinate on the highly sensitive March 15 launch of U.S. strikes on Yemen's Houthis.

In a memorandum addressed to Hegseth, the Inspector General's office said it would examine whether Hegseth's use of Signal met Defense Department guidelines and appeared set to look at whether the information provided was or should have been classified.