Details about American strikes in Yemen that Defense Secretary Pete Hegseth shared on a commercial chat app came from U.S. Central Command through a secure, government system designed for sending classified information, according to an official and a person familiar with the conversations.

The chats last month on the Signal app contained the times and sequencing for the launches of American fighter jets. A journalist as well as Hegseth’s wife, brother and personal lawyer were included in the chats.

The Atlantic reported more than a month ago that its editor had been inadvertently included in one Signal chat group about the strikes before they took place. On Sunday, The New York Times reported that the defense secretary also revealed information about the Yemen strikes in a second group chat.

Hegseth has not acknowledged any wrongdoing.

The Pentagon’s acting inspector general announced earlier this month that he would review Hegseth’s Yemen strike disclosures on Signal.

— The New York Times