Iran’s Foreign Minister Abbas Araghchi declared the Strait of Hormuz “completely open” to commercial shipping on Thursday, stating it was a goodwill gesture linked to the Lebanon ceasefire. The announcement briefly eased market concerns for a few minutes.

Within hours, Iranian Revolutionary Guard gunboats opened fire on commercial tankers attempting transit through the waterway. Multiple vessels, including an Indian-flagged super tanker, were forced to turn around after taking fire.

The United Kingdom Maritime Trade Operations confirmed the attack, stating that the tanker and crew were safe but noting the IRGC boats provided no warning over radio before firing.

Iranian military authorities later announced that control of the Strait had “returned to its previous state” under “strict management and control of the armed forces,” accusing the United States of “piracy” for maintaining a naval blockade on Iranian ports.

The U.S. Navy has enforced a blockade of Iranian ports since last Monday, with 23 ships turning around and returning to Iran as of Saturday.

Additionally, Iranian officials have demanded toll payments from commercial vessels transiting international waters through the Strait, which handles approximately one-fifth of the world’s daily oil supply.

Pakistani officials reported that negotiations between the United States and Iran are moving toward a deal before the April 22 ceasefire deadline.