TORONTO - A Canadian helicopter has gone missing off the coast of Greece during a mission with the North Atlantic Treaty Organization (NATO) allies, the country's Prime Minister Justin Trudeau confirmed on Twitter on late Wednesday.

"A Canadian helicopter involved in Op REASSURANCE with NATO allies has gone missing off the coast of Greece. I have spoken with (National Defense) Minister @HarjitSajjan, and search and rescue efforts are currently underway," Trudeau tweeted, adding that updates will be provided as soon as possible.

Greek media reported earlier this week that the helicopter, with no more than six people on board, crashed into the Ionian Sea when taking part in a NATO operation.

Colonel Juanita Chang from the Supreme Headquarters Allied Powers Europe confirmed the incident involving a helicopter from a ship under NATO command, according to a report by Turkey-based Anadolu Agency on Tuesday.

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