A wing part washed up on an island in the western Indian Ocean may be the first trace of Malaysia Airlines Flight 370.
Malaysia's Prime Minister said the debris on the French island of Reunion will be sent to Toulouse in France for investigation.
"We have had many false alarms before, but for the sake of the families who have lost loved ones, and suffered such heartbreaking uncertainty, I pray that we will find out the truth so that they may have closure and peace," Najib Razak said on his personal blog.
Air safety investigators - one of them a Boeing specialist - have identified the component as a "flaperon" from the trailing edge of a Boeing 777 wing, a US official said. Flight 370, which disappeared on March 8, 2014, with 239 people on board is the only 777 known to be missing.
"It's the first real evidence that there is a possibility that a part of the aircraft may have been found," said Australian Transport Minister Warren Truss.