Greek military aircraft intercepted Turkish Air Force planes in Greek-controlled air space in the eastern Aegean, a government spokesman said.
He said the Turkish planes repeatedly entered Greece's ''flight information region'' without notice. Greece is responsible for flights in the Aegean, and planes should submit flight plans before entry.
Political sources said the Turkish maneuvers, which started Tuesday,were a reply to the visit to Cyprus by Greek Prime Minister Andreas Papandreou, during which he pledged support for Greek Cypriots and demanded the withdrawal of Turkish troops from the island.
An authoritative source said Greece would make a diplomatic protest to Turkey.