The Strait of Hormuz is once again closed.

Iran’s military announced that the strait had “returned to its previous state” and “is under the strict management and control of the Armed Forces.” On Saturday, merchant ships trying to move through the Strait of Hormuz said they were warned over marine radio by Iran’s navy that transit was not permitted, and shipping sources said two vessels also reported coming under gunfire.

Reuters reported that maritime and shipping contacts described shots being fired by Iranian boats in the waters between Qeshm and Larak islands, prompting the affected ships to turn around before completing the crossing. The same accounts said some vessels also heard broadcasts stating the strait had been shut once more.

Iran Fired On Tanker, UK Agency Reports

The U.K. Maritime Trade Operations agency said it received an alert about an incident roughly 20 nautical miles northeast of Oman. UKMTO relayed that a tanker captain reported being approached by two Islamic Revolutionary Guard Corps gunboats that fired at the vessel, while adding the ship and crew were not harmed.

Separately, UKMTO’s account described a tanker being engaged by IRGC gunboats but remaining safe. The agency’s report located that event northeast of Oman, outside the immediate island area cited by other sources.