Investigators are examining the black box recorder from the crashed Germanwings Airbus which came down in the French Alps.
All 150 people on board the flight from Barcelona to Dusseldorf were killed.
French investigators are trying to work out why the plane went into an eight minute descent and then crashed.
Search and rescue teams are at the site of the disaster between Digne and Barcelonnette.
The majority of the victims are German and Spanish.
16 German school pupils returning from an exchange trip are among the dead.
Reporter Simon Conway is at their Joseph Koenig School in Haltern.
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Toni Munoz from RAC 1 radio in Barcelona says the identification process of victims is being carried out in part in Spain.
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Toni Munoz from RAC 1 radio in Barcelona says it has shocked the city.
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