"The naval units have been deployed since yesterday (Tuesday) in the south and southeast of the Aegean Sea," the source said, quoting the source as saying that he refused to disclose further details.
The Greek navy said it has "increasing preparations to confront Turkish activities in the Aegean Sea," against the backdrop of Ankara's months of exploration of energy sources near Greek islands, which Athens has repeatedly condemned.
This development comes a day after the Greek army announced the entry of its forces on alert, after Turkey revealed its intention to conduct a new oil exploration near a Greek island.
Ankara had previously said it would conduct a deep sea technical survey in the south and east of Kastelorizo island, off the coast of Turkey, in the eastern Mediterranean.
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