Iran's top joint military command,​Khatam al-Anbiya Central ‌Headquarters, said on Saturday that the Strait of Hormuz would be closed to vessel traffic, citing alleged violations of a ceasefire agreement by the US and Israel and US "bad faith" and "its clear breach of its commitments" by failing to end the war, Iran's Mehr state news agency reported.

It said that the closure was the "first step" in response to what it described as breaches of commitments and warned that further measures would be taken if "aggression" continued.

Ships had begun transiting the strait after the interim US-Iran agreement was signed earlier in the week.

Israeli strikes on southern Lebanon on Saturday killed at least 16 people, including two children, hours after reports emerged of a ceasefire agreement. The persistent fighting threatened an interim agreement between the US and Iran to end the war in the Middle East.

US Vice President JD Vance said on Saturday he expects to go to Switzerland soon for talks with Iran, even though Tehran said it would shut the Strait of Hormuz.