On the 20th (local time), a spokesperson for Iran's Armed Forces Khatam al-Anbia Central Command announced that the United States violated the ceasefire agreement and fired upon an Iranian merchant ship in the Gulf of Oman. According to the spokesperson, US forces deployed a large number of troops to the deck and crippled the navigation system, committing acts of "maritime plunder." The Iranian military warned that it would soon retaliate against such piracy and armed robbery. Earlier on the same day, President Trump stated via social media that a US Navy missile destroyer intercepted and fired upon the Iranian cargo ship 'TOUSKA', which was attempting to break through a naval blockade in the Gulf of Oman, penetrating its engine room and bringing it to a halt. He added that the US Marine Corps is currently in control of the vessel.