France is to conduct air, land and sea searches in and around the island of Reunion in the hope of finding more debris which could be linked to MH370.
Malaysia said on Thursday that a wing section found on the French Indian Ocean island definitely came from the doomed Malaysia Airline flight.
But investigators in France are yet to confirm the link, causing frustration among the families of victims.
France has also dismissed Malaysian claims that more debris has been found.
The Boeing 777 was travelling from Kuala Lumpur to Beijing on 8 March 2014 when it vanished from radar. It had 239 people on board, most of them Chinese.
For a third day, relatives angered by mixed messages from the authorities and distrusting official announcements are staging a small protest outside Malaysia Airlines' offices in Beijing.
Source: BBC