The attack on the Barbados-flagged bulk carrier True Confidence further escalates the conflict on a crucial maritime route linking Asia and the Middle East to Europe that has disrupted global shipping.
The Iranian-backed Houthis have launched attacks since November, and the US began an airstrike campaign in January that so far hasn't halted the rebels' attacks.
Meanwhile, Iran announced Wednesday that it would confiscate a $50 million cargo of Kuwaiti crude oil for American energy firm Chevron Corp. aboard a tanker it seized nearly a year earlier.
It marks the latest twist in a yearslong shadow war playing out in the Middle East’s waterways even before the Houthi attacks began.
The attack Wednesday on the True Confidence came after it had been hailed over the radio by individuals claiming to be the Yemeni military, officials said.
The Houthis have been hailing ships over the radio in the Red Sea and the Gulf of Aden since launching their attacks, with analysts suspecting the rebels want to seize the vessels.
The extent of the damage to the Liberian-owned ship remained unclear, but the crew fled the ship and deployed lifeboats, signaling a serious incident, a US defense official said on condition of anonymity to discuss intelligence matters.
Two other US officials, also speaking on condition of anonymity as they didn't have authorization to speak publicly, acknowledged the attack caused “fatalities,” without elaborating.
A US warship and the Indian navy were on the scene, trying to assist in rescue efforts.
The UKMTO on Wednesday night acknowledged the ship had been abandoned by its crew and was no longer under command.
Brig. Gen. Yahya Saree, a Houthi military spokesman, claimed the attack in a prerecorded message, saying its missile fire set the vessel ablaze. He said the rebels' attacks would only stop when the “siege on the Palestinian people in the Gaza is lifted.”
The rebels have repeatedly targeted ships in the Red Sea and surrounding waters over the Israeli war on Gaza, but up to Wednesday hadn't killed any crew members.
The vessels have included at least one with cargo bound for Iran, the Houthis’ main benefactor, and an aid ship later bound for Houthi-controlled territory.
Despite more than a month and a half of US-led airstrikes, Houthi rebels have remained capable of launching significant attacks.
They include the attack last month on a cargo ship carrying fertilizer, the Rubymar, which sank on Saturday after drifting for several days, and the downing of an American drone worth tens of millions of dollars.
It was unclear why the Houthis targeted the True Confidence. However, it had previously been owned by Oaktree Capital Management, a Los Angeles-based fund that finances vessels on installments. Oaktree declined to comment.
Meanwhile, a separate Houthi assault Tuesday apparently targeted the USS Carney, an Arleigh Burke-class destroyer that has been involved in the American campaign against the rebels.
The Carney shot down bomb-carrying drones and one anti-ship ballistic missile, the US military's Central Command said. Saree acknowledged that attack as well.
The US later launched an airstrike destroying three anti-ship missiles and three bomb-carrying drone boats, the Central Command said.
The Houthis haven't offered any assessment of the damage they've suffered in the American-led strikes that began in January, though they've said at least 22 of their fighters have been killed. One civilian has reportedly been killed.
The US Treasury separately announced new sanctions targeting a Houthi financier and the expeditionary Quds Force of Iran's paramilitary Revolutionary Guard, which arms the rebels.
The Houthis have held Yemen's capital, Sanaa, since 2014. They've battled a Saudi-led coalition since 2015 in a long-stalemated war there.
Meanwhile, the Indian navy released a video of its sailors from the INS Kolkata fighting a fire aboard the MSC Sky II, which had been targeted by the Houthis in the Gulf of Aden on Monday.
The Mediterranean Shipping Co., a Switzerland-based company, said the missile struck the ship as it was traveling from Singapore to Djibouti. No one was injured.
Ship seizures and explosions have roiled the region since 2019. The incidents began after then President Donald Trump unilaterally withdrew the United States from Iran’s nuclear deal with world powers.
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