Defense Secretary Pete Hegseth on Monday reacted to the revelation he discussed details about an imminent attack on Houthis in Yemen in March in a second Signal group chat -- one that included his wife and brother.

Speaking to reporters at the White House Easter Egg Roll, which he attended with his family, Hegseth attacked those he said were "disgruntled" former employees and the media for what he said was "anonymous smears."

"I have spoken with the president and we are going to continue fighting. On the same page all the way," Hegseth said.

Sources told ABC News that Hegseth shared information about a forthcoming attack on Houthi rebels in Yemen in a Signal message chat that included his wife Jennifer, who does not work for the Defense Department, as well as his brother and his personal lawyer.

The chat reportedly occurred around the same time that top Trump officials, including Hegseth, discussed a strike on Houthis over the commercially-available app. That text chain came to light because inadvertently added to the chat was The Atlantic's editor-in-chief Jeffrey Goldberg. The Pentagon's independent inspector general is currently reviewing Hegseth's use of Signal to discuss military actions.

White House press secretary Karoline Leavitt, pressed on the latest revelation on "Fox & Friends" on Monday, said "the president stands strongly behind Secretary Hegseth" and said Hegseth "is doing a phenomenal job leading the Pentagon."

The use of Signal to discuss sensitive military operations may complicate ongoing investigations into potential leaks involving the first known group chat, which included top aides and other members of Hegseth's team -- at least three of whom have been since fired in relation to the inquiry.

Those officials -- Dan Caldwell, Colin Carroll and Darin Selnick -- have since spoken out against what they say are baseless accusations against them.

"At this time, we still have not been told what exactly we were investigated for, if there is still an active investigation, or if there was even a real investigation of 'leaks' to begin with," they said in a joint statement on X on April 19.

This is a developing story. Please check back for updates.