Pete Hegseth shared information ahead of Yemen strikes in a Signal chat with wife and brother

Hegseth used his personal phone to send information regarding U.S. military operations in Yemen to a Signal group chat that included his wife and brother, two sources told NBC News.

Defense Secretary Pete Hegseth used his personal phone to send information about U.S. military operations in Yemen to a 13-person Signal group chat, including his wife and his brother, two sources with knowledge of the matter confirmed to NBC News.  

He did so after an aide had warned him to be careful not to share sensitive information on an unsecure communications system before the Yemen operation, the sources said. 

The development comes about a month after it became public that Hegseth shared details of strikes in Yemen in a separate Signal chat with top administration officials. The editor-in-chief of The Atlantic was mistakenly added to that chain. 

The New York Times first reported the existence of the second Signal chat. 

The Times cited four unnamed sources. Some of them, the Times reported, said the information Hegseth sent in the second chat — such as the flight schedule of the FA-18 planes being used — appeared to be similar to information he had shared in the Signal chat reported by the editor of The Atlantic. One source confirmed that to NBC News.