On Friday, German police searched the two homes where the co-pilot stayed when not flying: an apartment he kept in Dusseldorf, and his parents' home in the small German town of Montabour.
Authorities Search Home of Germanwings Co-Pilot Andreas Lubitz

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Rescuers stand nearby while relatives pay their respects at the memorial for the victims of the air disaster in the village of Le Vernet, in the French Alps, March 27, 2015.