State media reported that the military described the waterway as now under “strict management and control of the armed forces,” linking the move to what it called an ongoing US naval blockade.

Shipping monitors indicated continued movement of commercial vessels through the narrow passage, with some ships adjusting routes near Iranian waters while identifying themselves under neutral flags. Several oil and gas tankers reportedly completed crossings, while others turned back amid uncertainty.

The development casts doubt on earlier remarks by US President Donald Trump, who suggested a potential breakthrough in talks aimed at ending the wider conflict involving Washington, Israel, and Tehran.

Iran had briefly reopened the strait following a ceasefire in Lebanon that paused fighting involving Hezbollah, a decision that initially eased oil prices before fresh warnings emerged about a possible closure if tensions continued.

Diplomatic efforts are ongoing, with mediators pushing for a broader agreement as the temporary ceasefire window nears its end. Discussions involving regional actors have intensified, while talks are expected to continue in the coming days.

A major sticking point remains Iran’s stockpile of enriched uranium, with conflicting claims between Washington and Tehran over any proposed transfer of materials. Iran has firmly denied any agreement to hand over its uranium reserves.