A report by Greek newspaper, Kathimerini, said the Libyan Government of National Unity had objected to illegal Greek prospecting off the south of Crete in areas under Libyan jurisdiction.

Greek sources told Kathimerini that “the Greek Embassy received a note verbale regarding the prospecting conducted south of Crete, which will be duly answered in the coming days by the Greek Foreign Ministry.”

"Tellingly, the letter was delivered shortly before the meeting between Prime Minister Kyriakos Mitsotakis and Turkish President Recep Tayyip Erdogan in Ankara, raising suspicion that Turkey had a hand in the matter." It said.

Athens is expected to respond mainly in order to record its reaction (probably with a note verbale), and not, of course, that it considers that the Libyan allegations have any basis in fact, according to the report.

Libya’s demarche was triggered, the report says, by the seismic surveys completed weeks ago by the Norwegian vessel Ramform Hyperion, which is no longer even sailing in the Mediterranean but in the North Sea off Norway.

GNU is essentially challenging the delimitation used by Greece for the concession of maritime areas west and southwest of Crete (under the law of Yannis Maniatis 4001/2011), according to which, in the absence of an agreement between Athens and Tripoli, the median line is taken as the limit.