0Local authorities in the overseas French territory said they had ordered a ship to divert to the area where the unidentified object was spotted, some 70 kilometres (45 miles) off the island, and a military plane was due to fly over the zone.
The pilot on the flight from Paris to Reunion island spotted the object early Tuesday while flying at an altitude of 3,000 metres (9,800 feet), Air France said in a statement.
The disappearance turned into one of the biggest mysteries in aviation history, sparking a colossal hunt in the Indian Ocean based on satellite data suggesting MH370's possible path -- to no avail.
Then in late July a man on Reunion island found the two-metre (almost seven-foot) wing part, known as a flaperon, washed up on a beach.
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It was flown to France for tests by aviation experts, who confirmed it was part of the ill-fated Boeing 777.
According to Reunion authorities, the ship that diverted to the area indicated by the pilot did not find anything.