The debris was found by Blaine Gibson, an American attorney and adventurer, on the island of Nosy Boraha, near Madagascar, according to CNN.
Another piece was found by Samuel Armstrong on Kangaroo Island, off the coast of southern Australia, according to CNN.
The flight disappeared March 2014 with 239 people on board.
Gibson found another piece of the wreckage in February off the coast of Mozambique. Gibson has been hunting the flight for the last year.
Several other pieces of the plane have washed up over the past year around the Indian Ocean. However, officials have not been able to find the main underwater wreckage despite an extensive search.
Crews are expected to complete their sweep of the 46,000 square-mile area by August. There are no plans to extend the search beyond that.
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