Ankara, Turkey – Greek fighter jets “harassed” Turkey’s research vessel Cesme while it was sailing in international waters in the Northern Aegean, National Defense Ministry said.

One of four Greek fighter jets dropped chaff cartridge two nautical miles away, the same sources said, adding that Turkey “reciprocated the harassment.”

Cesme was sailing in international waters in the sea area between Limnos and Agios Efstratios.

Sources in the Turkish Defense Ministry said that the ship has begun conducting “hydrographic research” in the northern Aegean Sea, and will continue until March 2, 2021.