WASHINGTON (AP) — Defense Secretary Pete Hegseth pulled the airstrike information he posted into Signal chats with his wife, brother and dozens of others from a secure communications channel used by U.S. Central Command, raising new questions as to whether the embattled Pentagon head leaked classified information over an open, unsecured network.

Here’s what to know about the reports of another group chat in which the Defense Secretary shared sensitive information.

He shared details of a March attack in a message group that included his wife, brother and personal lawyer, a source familiar with the matter told Reuters.