TEHRAN/JERUSALEM -- Iran's main military command Khatam al-Anbiya Central Headquarters announced Saturday the closure of the Strait of Hormuz, citing US "breach" of the newly-signed peace memorandum of understanding (MoU) and Israel's ceasefire "violations" in southern Lebanon, Iran's semi-official Mehr news agency reported.

Meanwhile, Iranian Foreign Ministry spokesperson Esmaeil Baqaei was quoted by Mehr as saying that the Iranian negotiating team would leave Tehran for Switzerland soon on Saturday.

According to a report by Iran's semi-official Fars news agency, the team will follow up on and demand the fulfillment of US commitments, including forcing Israel to stop its attacks on Lebanon.

Later, US Vice-President JD Vance told Fox News that the United States is "not seeing any evidence that the Iranians are still closing down the Strait of Hormuz. It is going to take some time to clear those mines, though."

Vance also said that US presidential envoy Steve Witkoff and US President Donald Trump's son-in-law Jared Kushner have already arrived in Switzerland for talks with Iran, and that he himself could travel to Switzerland for the talks soon.