Rescuers pulled six crew members alive from the Red Sea after Houthi militants attacked and sank a second ship this week. The Houthis claimed responsibility for the assault that maritime officials say killed four of the 25 people aboard the Eternity C.

The attack on the Eternity C, which killed at least three of the crew, represents the most serious assault carried out by the Houthis in the crucial maritime trade route.

Yemen's Houthi rebels have sunk the cargo ship Eternity C in the Red Sea, killing a unknown number of people, the United States said on Wednesday, the second such incident in four days. The US embassy in Yemen said that "many" of the survivors were taken hostage,