WASHINGTON  DC – The US is investigating a leak of classified documents describing an American assessment of Israel’s plans to attack Iran, House of Representatives Speaker Mike Johnson has confirmed. The documents were reportedly published online last week and are said to describe satellite imagery showing Israel moving military assets in preparation for a response to Iran’s missile attack on 1 October.

The documents, marked top secret, were shareable within the Five Eyes intelligence alliance of the US, Britain, Canada, New Zealand and Australia, CBS, the BBC’s US partner, reported. For weeks Israel has been deciding how and when to respond to Iran’s latest missile attack. Israel’s defense minister has warned it will be “deadly, precise and surprising”.

The two documents reportedly appear to be attributed to the US National Geospatial Intelligence Agency and National Security Agency (NSA), and were published on an Iranian-aligned Telegram account last Friday. Johnson, the highest-ranking member of Congress, told CNN that “the leak is very concerning”. “There’s some serious allegations being made, there’s an investigation under way, and I’ll get a briefing on that in a couple of hours,” the Louisiana Republican lawmaker said.

The Pentagon confirmed in a statement that it was aware of reports about the documents, but did not comment further. The US agencies involved, as well as the Israeli government, have not publicly commented. Iran has played down the leak. Its foreign ministry spokesman said the country was prepared to counter Israeli measures no matter what they were. CNN and Axios first reported the alleged leak, which appears to confirm once again that the US spies on its close ally Israel.

One document makes a reference to Israel’s nuclear capabilities – which neither the US nor Israel ever officially acknowledge – apparently ruling out the use of such an option in any planned strike. One former American intelligence official told the BBC the unauthorized release was probably an attempt to expose the scale of the planned retaliation, possibly to disrupt it.

The US is investigating whether the information was intentionally leaked by a US agent, or whether it was stolen, possibly through hacking, officials told the Associated Press (AP). The two documents appear to be based on satellite information obtained from 15-16 October. (BBC)

Photo: A man walks in a building that was destroyed by a missile attack.  (Getty Images) …[+]