The information is published by the news agency Reuters with reference to American intelligence sources.
According to the sources, the information suggests that Iran was serious about closing the heavily trafficked shipping lane as revenge for "foreign aggression".
Around a fifth of the world's oil traffic passes through the narrow waters between Iran and the Arabian Peninsula. In addition, significant amounts of gas are transported daily through the strait, which is considered one of the most important in the world for global energy supply.
Israel attacked Iran on June 13 with reference to fears that the country was developing nuclear weapons. A little over a week later, the US entered the war on Israel's side, by bombing three nuclear facilities with powerful so-called bunker busters. Shortly afterwards, Iran's parliament voted to close the Strait of Hormuz - but no final decision was made.
Hours later, the parties agreed to a ceasefire.
