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.

An attack by Yemen’s Houthi rebels on a Liberian-flagged cargo ship in the Red Sea killed three mariners and wounded two others, a European Union naval force said Tuesday. The attack on the Greek-owned Eternity C follows the Houthis claiming they attacked and sank another vessel Monday in the Red Sea,

Two Liberian-flagged ship attacks and a round of Israeli airstrikes early Monday targeting Houthi rebels raised fears of a renewed Houthi campaign against shipping.