By Renee Maltezou and Jonathan Saul ATHENS (Reuters) -Rescuers pulled six crew members alive from the Red Sea after Houthi militants attacked and sank a second ship this week, while the fate of another 15 was unknown after the Iran-aligned group said they held some of the seafarers.

At least three of the 25 people on board the Eternity C were killed after it was attacked by the Iran-backed group.

Yemen’s Houthi militants sank two commercial ships and killed sailors during three days of attacks in the Red Sea this week — a stark reminder to vessel owners and crews of the risks of traversing the maritime chokepoint.