The EU naval mission protecting ships crossing the Red Sea said that its frigate Psara had destroyed an unmanned aerial drone in the Gulf of Aden on Sunday.
The Aspides mission began in February in response to drone and missile attacks by the Iran-backed Houthi militias on vessels in the region. The Houthis describe the attacks as acts of solidarity with Palestinians in Israel's war in Gaza.
Other countries, including the United States, also have naval forces operating in the area.
Iran has long denied arming the Houthis, likely because of a yearslong United Nations arms embargo on the militias. However, the US and its allies have seized multiple arms shipments bound for the insurgents in Mideast waters.