The US is investigating an apparent leak of Israeli plans to attack Iran, which were published on an Iranian-aligned Telegram account. The leaked documents, attributed to the US National Geospatial Intelligence Agency and National Security Agency, describe Israel's preparations for a strike on Iran and discuss Israeli drone movements. The leak has raised concerns and prompted an investigation by US agencies. It is unclear whether the information was intentionally leaked by a US agent or stolen through hacking. The US and Israeli governments have not publicly commented on the leak.