Yemen's Houthi rebels killed 3 mariners with an attack on a ship in the Red Sea, a European naval force says, fueling concern over a possible new wave of attacks by the Iran-backed group.

Another Greek-owned cargo ship was attacked in the Red Sea on Monday, resulting in at least two crew members wounded and another two missing.

Two crew members of a Liberian-flagged cargo ship have been killed in an attack in the Red Sea off the coast of Yemen, Liberia says. A Liberian representative to the International Maritime Organization (IMO) said the Eternity C was "attacked