Mr Erdogan suggested Turkey already has acted on the warning and suggested the ship had been attacked, but did not give further details. In a speech in Ankara he said: “We said that if you attack our Oruc Reis you will pay a high price, and they got their first answer today.”
The Oruc Reis vessel started work on Monday accompanied by Turkish warships.
The ship is currently exploring for oil and gas in the highly disputed waters.
Tensions in the Mediterranean have escalated over recent weeks after Greece placed its military forces on high alert following Turkey’s exploration.
After the drillship was escorted by gunboats to begin its seimis research on Monday, Athens called for Turkey to stop the “illegal activities”.
This has since prompted the US, EU, France and Israel to condemn the actions by Turkey.
“Our country does not threaten [anyone], but nor can it be blackmailed,” the Greek prime minister, Kyriakos Mitsotakis, told the country on Wednesday night.
“Let it be known to all: the risk of an accident lies in wait when so many military forces gather in a limited area.”
French President Emmanuel Macron tweeted: “The situation in the eastern Mediterranean is worrying.
“Turkey’s unilateral decisions on oil exploration are causing tensions.
“These must end in order to allow a peaceful dialogue between neighboring countries and allies within NATO.
“I have decided to temporarily strengthen the French military presence in the Eastern Mediterranean in the coming days, in cooperation with European partners including Greece.”
This is a breaking story… More to follow.