STORY: Houthi militants are sparking fresh fears for shipping in the Red Sea.This footage, released by the group on Wednesday, shows the damaged cargo vessel Eternity C -- partially submerged before eventually sinking after an attack.

Rescuers launched a search Wednesday for survivors of a Liberian-flagged cargo ship that came under attack from Yemen's Houthi rebels in the Red Sea, authorities said. At least three mariners were killed and two were wounded.

Six crew members have been recovered 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.The Liberian-flagged, Greek-operated Eternity C was carrying 25 crew when it sustained significant damage and lost all propulsion after being hit by rocket-propelled grenades fired from small boats on Monday,