According to Iran's Fars News, the passage of oil tankers through the waterway has been stopped. Shipping sources told Reuters that several vessels stranded in the strait have received notifications from the Iranian Navy stating that the route remains closed.

A senior Iranian diplomat said on Wednesday that Iran will allow ships to pass through the Strait of Hormuz during the two-week ceasefire, but any decision to open the Strait entirely in future will depend on the results of the peace talks with the US.

So far, 3,000 ships are waiting to pass through the Strait of Hormuz, Iranian Ambassador to China Abdolreza Rahmani Fazli told the media here."Iran will take measures to reduce the pressure and let ships pass through, but whether the Strait of Hormuz can be opened entirely will have to wait for the results of the negotiations," he said.

Meanwhile, a senior US official said Wednesday that a 10-point ceasefire plan published by Iran is not the same set of conditions that were agreed to by the White House for pausing the war.

"The document being reported by media outlets is not the working framework," the senior official said on condition of anonymity.

The official gave no further comment, saying, "We're not going to negotiate in public out of respect for the process."

The statement adds to concerns over the fragility of the truce declared late Tuesday – hours before a deadline set by President Donald Trump for Iran to meet US demands or face what he called an end to its "whole civilization."

Trump had said in his declaration of a two-week truce for further negotiations that "we received a 10-point proposal from Iran, and believe it is a workable basis on which to negotiate."

Iranian state media then published a 10-point plan that notably included continued Iranian control over the strategic Strait of Hormuz, an end to international sanctions on the country, and "acceptance" of uranium enrichment.

These items would run contrary to Washington's public statements about what it wants Iran to do.