The Pentagon inspector general has reportedly expanded an investigation into Defense Secretary Pete Hegseth’s use of the encrypted messaging app Signal. Citing a congressional aide and a source familiar with the inquiry,

The Pentagon inspector general has expanded an investigation into Defense Secretary Pete Hegseth’s sharing of military plans to a second Signal chat that included his wife and brother, according to people familiar with the inquiry.

The news comes about a month after the editor-in-chief of The Atlantic was mistakenly added to a separate Signal chat with national security leaders.