Six crew members have been rescued and at least three others killed after a cargo ship was attacked by Yemen's Houthis and sank in the Red Sea, a European naval mission says.

Rescuers pulled six crew members alive from the Red Sea after Houthi militants attacked and sank a second ship this week.

The Eternity C, a commodity carrier, sank Wednesday morning, two days after it came under attack, the European Union’s naval force in the area said in a statement.