WASHINGTON — The US is investigating an unauthorized release of classified documents that assess Israel's plans to attack Iran, three US officials told The Associated Press. A fourth US official said the documents appear to be legitimate.

The documents are attributed to the US Geospatial Intelligence Agency and National Security Agency and note that Israel continues to move military assets in place to conduct a military strike in response to Iran's blistering ballistic missile attack on Oct. 1. They were sharable within the 'Five Eyes,' which are the US, Great Britain, Canada, New Zealand and Australia.