An Iranian senior official warned on Monday that Tehran would consider any US attempt to interfere in the Strait of Hormuz as a violation of the ceasefire.
President Donald Trump had previously announced that US forces would start escorting ships from other countries blocked in that key maritime passage on Monday.
"Any US interference in the new maritime regime of the Strait of Hormuz will be considered a violation of the ceasefire," posted X Ebrahim Azizi, president of the Iranian Parliament's National Security Commission.
Early this morning, a new attack on a tanker in the waters of the Strait of Hormuz was confirmed, the second incident in less than 24 hours. The tanker, of unidentified flag, was hit at 19:40 GMT on Sunday "by an unknown projectile," with no injuries among the crew or environmental impact.
This incident occurred 78 nautical miles (about 144 kilometers) north of Fujairah, in the United Arab Emirates, which urged ships transiting the area to exercise caution and report any suspicious activity to the agency.
In the afternoon, a US warship attempting to cross the Strait of Hormuz was forced to turn back after ignoring a warning from Iran, reported Fars agency on Monday, citing local sources, who added that two missiles hit it as it sailed near the island of Jask. The US has dismissed this information as "Iranian propaganda."