France has halted the search for bodies at the Germanwings crash site.
All 150 on board the flight from Barcelona to Duesseldorf died when the plane crashed into the French Alps at the end of March.
Prosecutors believe German co-pilot Andreas Lubitz deliberately flew the Airbus A320 jet into the mountainside.
Cockpit audio recordings from the first black box, recovered hours after the March 24 crash, led prosecutors to believe that Lubitz locked the captain out of the cockpit and put the plane into a steep descent.
A separate German legal inquiry has pointed to mental health problems affecting the 27-year-old Lubitz.
German prosecutors said earlier this week that the co-pilot had made Internet searches on ways to commit suicide in the days ahead of the crash, as well as searches about cockpit doors and safety precautions.