Turkey said on Friday it extended the operations of its seismic research vessel Barbaros Hayrettin Pasa off southeastern Cyprus until Oct. 18.
Cyprus’ internationally recognized Greek Cypriot government has long been at loggerheads with Turkey, which began drilling for oil and gas near Cyprus last year.
The dispute stems from overlapping claims to regional waters linked to the split of the island between Greek and Turkish Cypriots. A breakaway Turkish Cypriot state in north Cyprus is recognized only by Ankara.
Turkey questions Cyprus’ right to explore in the seas around the island because it maintains that the Nicosia administration does not represent the interests of Turkish Cypriots, Reuters reported.
That argument is dismissed by Cyprus, which is legally recognized as representing the entire island.
Friday’s announcement came three days after Turkey extended the operations of its Yavuz drill ship off Cyprus until Oct. 12, in a move that Cyprus described as provocative.
Greece, also locked in dispute with Turkey over east Mediterranean waters, expressed concern.