A commercial bulk carrier was sunk in the Red Sea by Houthi rebels, killing three crew members and leaving several others unaccounted for, according to the European Union’s maritime security mission. The ship, Eternity C, came under sustained attack this week and eventually sank Wednesday morning.

Of the 25 people onboard — 21 Filipinos, one Russian crew member, and a three-person security team — ten were rescued from the sea, including eight Filipino crew members and two security personnel from Greece and India. The remaining crew members are believed to be either dead or held captive by the Houthis.

The Iran-backed Houthi group claimed responsibility for the attack, stating they used an unmanned boat and six cruise and ballistic missiles to strike the Liberian-flagged ship, operated by a Greek firm. The group said they retrieved some of the survivors and took them to an undisclosed location for medical care.

U.S. officials accused the Houthis of kidnapping and demanded the immediate release of the crew. The attack on Eternity C is the second ship sinking claimed by the Houthis this week, following Sunday’s assault on the Magic Seas. The group continues to target vessels they claim are linked to Israel, citing retaliation for Israel’s actions in Gaza.