Kirby said on Monday that the administration was still not certain if the classified information that became publicly disclosed was leaked or hacked.

President Biden is "deeply concerned" by the possible leak of U.S. intelligence documents regarding Israeli preparations for an attack on Iran, spokesman John Kirby said Monday.

White House spokesperson John Kirby didn’t refute the documents’ authenticity in remarks to the press on Monday

President Joe Biden is "deeply concerned" about a leak of classified documents that contain the US's assessment of Israeli plans to attack Iran, White House National Security Council spokesman John Kirby said. Officials have not determined whether the documents were released due to a hack or a leak, Mr Kirby said.

Critics of the Biden administration are raising the prospect that an American official leaked the documents to hinder Israel’s expected attack on Iran.

The U.S. is alarmed over leaked intelligence documents detailing Israel's plans for retaliation against Iran. Though no further documents are jeopardized, ongoing talks with Israel are being conducted,

House Speaker Mike Johnson said there was an investigation underway into the leak of classified U.S. intelligence documents related to Israel's preparations for an attack on Iran.

The Defense Department and the FBI are investigating what could be a significant intelligence breach about Israel's plans to strike Iran.

U.S. officials are investigating an apparent leak of two “top secret” documents about Israel. The documents appear to outline American spy agencies’ intelligence on possible Israeli preparations for a retaliatory attack on Iran.

Former CIA station chief Dan Hoffman joined 'Fox & Friends First' to discuss why the leak is of 'grave concern,' the possible motive behind it and the broader foreign policy implications of the move.