Malaysia Airlines describes the apparent retrieval of the first debris from its missing flight MH370 as a "breakthrough" in the investigation.
The Malaysian prime minister, Najib Razak has disclosed that the flight-control structure was part of the Boeing 777.
France's justice ministry says that further analysis, to begin on 6 August, should confirm the "strong suspicions" regarding the origin of the component discovered on Reunion on 29 July.
Malaysia Airlines says: "This is indeed a major breakthrough for us in resolving the disappearance of MH370."
"We expect and hope that there would be more objects to be found which would be able to help resolve this mystery."