Turkish President Tayyip Erdogan and European Council President Charles Michel discussed developments in the Eastern Mediterranean on Sunday, CNN Turk reported, according to Reuters.

NATO allies Turkey and Greece have been locked in a row over hydrocarbon exploration in the sea’s disputed waters and the extent of their continental shelves. 

There was no official confirmation of the talks.

Tensions escalated last month after Turkey sent a seismic survey vessel for hydrocarbon exploration in disputed waters in the region after a maritime deal between Greece and Egypt.

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