US intelligence about Israel's plans to attack Iran leaked, sources say

The US is investigating a leak of highly classified US intelligence about Israel’s plans for retaliation against Iran, according to three people familiar with the matter. One of the people familiar confirmed the documents’ authenticity.
The leak is “deeply concerning,” a US official told CNN.
The documents, dated October 15 and 16, began circulating online Friday after being posted on Telegram by an account called “Middle East Spectator.”
They are marked top secret and have markings indicating they are meant to be seen only by the US and its “Five Eyes” allies — Australia, Canada, New Zealand, and the United Kingdom