Iran said Saturday that the Strait of Hormuz is closed, citing ceasefire violations after Israel continued deadly strikes in southern Lebanon overnight.

The Islamic Revolutionary Guard Corps Navy warned ships not to approach the waterway, which Iran had committed to reopening under the interim peace deal signed this week. It said in a statement that vessels’ safety would be at risk if they did so.

Iran’s top joint military command said the ⁠closure was the “first step” in response to what were described as ‌breaches of ⁠commitments by the U.S. and Israel, according to Iran’s semiofficial Mehr news agency.

In a statement on X that did not acknowledge the apparent closure, U.S. Central Command said that 55 merchant ships transited the strait on Saturday, “moving large amounts of cargo and more than 17 million barrels of oil to global markets.”

U.S. forces “remain present and vigilant to ensure all aspects of the agreement with Iran are adhered to, obeyed, and in full force and effect,” the statement said.

Iran and the U.S. have both shown frustration with Israel for continuing to strike Lebanon despite the deal signed this week, which specified that fighting must end on all fronts, including Lebanon. Though Israel was not a direct party to that deal, Iran has warned that it would consider Israeli strikes a violation of the terms.

Early Saturday, Israeli strikes killed at least 16 people, including two children, according to Lebanese civil defense and media, one day after the U.S. said Israel and Hezbollah had implemented a fresh ceasefire at President Donald Trump’s request.

Israel hit a series of towns across Lebanon’s south early Saturday, Lebanese news agency NNA reported. An airstrike on the town of Arabsalim reportedly killed three people, the agency reported, and a drone strike on the town of Deir al-Zahrani reportedly killed one person. At least seven people remain trapped under the rubble, it said. Lebanon’s army said a soldier was killed between Kfar Rumman and Nabatieh in southern Lebanon.

A previous wave of strikes on Friday killed 83 people, Lebanon’s Ministry of Health said.

A statement from the Israel Defense Forces said Hezbollah, an Iran-backed militant group, had breached the ceasefire and “launched more than 50 projectiles toward IDF soldiers operating in southern Lebanon” overnight, and that Israel had attacked what it described as Hezbollah targets in response. “The IDF remains committed to the ceasefire agreement,” the statement said.

Hezbollah said it had “adhered to the ceasefire since Friday evening,” accusing Israel of making false claims to justify its attacks in an effort to “sabotage the agreement” between Iran and the U.S.