The Iranian-supported Houthis carried out an attack in the Gulf of Aden on Wednesday that killed multiple crew members on a commercial shipping vessel, representing the first fatalities the rebels have been responsible for since their attacks in the Red Sea began last November.

The Houthis fired a ballistic missile that struck the M/V True Confidence, a Barbados-flagged, Liberian-owned bulk carrier, 54 nautical miles southwest of Aden, Yemen, and it left at least two people dead, according to CNN. The crew abandoned the vessel, according to the United Kingdom Maritime Trade Operations agency.