"Turkish frigates TCG Barbaros and TCG Burgazada have conducted maritime training with American destroyer USS Winston S. Churchill in the eastern Mediterranean on 26 August," the defence ministry announced in a tweet.

The ministry also released photos of three warships, two of them Turkish and one flying the Turkish and US flags.

It did not specify the military drills' location or other details.

The Turkish announcement came in the heat of an escalating row over maritime borders and rights to large natural gas reserves that has pitted Turkey against its old rival Greece and the rest of the European Union.

Greece began three days of exercises with France, Italy and Cyprus on Wednesday in an area south of Crete.