Iran's top security official said the country will announce a new restricted maritime zone in the Persian Gulf in the coming days, extending from the line of the existing U.S. naval blockade into Gulf waters.

Mohsen Rezaei, secretary of Iran's Supreme National Security Council, made the remarks in a Sunday interview with state television. He stated that any vessel entering the zone would be placed on an Iranian sanctions list. Rezaei also indicated that maps for a new shipping corridor through the Strait of Hormuz, developed in coordination with Oman, would be approved soon, with the route falling under Iranian management.

On Tuesday, Rezaei posted on X that economic warfare from Washington would be met by the maritime exclusion zone reaching the blockade perimeter. He added that Iran's operational posture toward U.S. warships and bases had been fundamentally recalibrated, referencing recent Iranian missile activity near the strait. U.S. forces have reported evading the claimed attacks.

The announcement comes amid a broader conflict in which the United States has imposed a naval blockade on Iranian ports and conducted strikes on vessels linked to Tehran. Iran has restricted tanker traffic through the Strait of Hormuz, a critical chokepoint for global oil shipments, leading to reduced transits and higher Brent crude prices that reached near $98 per barrel.

Rezaei described the strait as fully under Iranian control and dismissed U.S. claims of open passage as false. Details on the precise boundaries of the new zone remain limited, and the timing of the formal announcement has not been specified.