U.S. President Donald Trump says Iran fired on a South Korean-operated cargo vessel in the Strait of Hormuz and urges Seoul to join U.S.-led efforts to guide ships through the waterway. In posts and remarks, Trump links the incident to the U.S. operation “Project Freedom,” which is intended to escort or assist commercial vessels affected by Iran’s pressure related to the U.S.-Israeli conflict with Iran. He also argues the South Korean ship was harmed after deciding to sail without joining a protected convoy.

South Korea reports an explosion and fire aboard the Panama-flagged bulk carrier HMM Namu, operated by HMM, while the vessel was anchored near the United Arab Emirates. Seoul’s foreign ministry rejects Trump’s account that the ship was sailing alone without U.S. protection, saying the vessel had been anchored in the relevant area before the fire. Senior Korean officials say evidence points “almost certainly” to Iran, while also stating the investigation is still ongoing and vows a “diplomatic offensive” once responsibility is confirmed.

Iran denies involvement, with its embassy in Seoul categorically rejecting allegations about any Iranian military role in the incident.