Investigators and experts from France and Malaysia are scheduled to begin examining a Boeing 777 wing fragment today to determine whether it is from missing Flight MH370.

A piece of plane debris was found on Reunion Island in the Indian Ocean last week. It was later identified as a wing flap from a Boeing 777. MH370 is the only 777 that's unaccounted for.

The part was earlier transferred under police escort to a military lab near Toulouse in southern France, where the examination will take place.

The same laboratory investigated crash of an Air France Airbus 330, which went down in the Atlantic en route from Rio de Janeiro to Paris. It took nearly two years for investigators to locate the black boxes and resolve the case.

Aviation expert Pascal Roches warns that the MH370 case is much more complex than that of the Air France flight.

"We have very very little information on the route it took for at least one hour. For example, for the Rio-Paris flight, we had a period of uncertainly of 10 minutes and it took us two years to find the black boxes. So I think it's going to be complicated."

The verification of the wing part is expected to happen quickly, which could then limit the search area for the plane.

Flight MH370 disappeared on its way from Kuala Lumpur to Beijing in March 2014.

Most of the 239 people on board are from China.