Two crew members of a Greek-managed vessel were wounded and two were missing in a drone attack off Yemen on Monday, hours after Iran-aligned Houthi militants claimed an assault on another bulk carrier in the Red Sea,

Yemen's Houthi rebels say the bulk carrier Magic Seas, which they attacked on Sunday, has sunk in the Red Sea.

However, the fate of the Liberian-flagged Magic Seas was unclear, with the vessel at risk of sinking, said Michael Bodouroglou, a representative of its operator Stem Shipping. Sunday's assault off the southwest coast of Yemen was the first such incident reported in the vital shipping corridor since mid-April.