A young German co-pilot locked himself alone in the cockpit of Germanwings Flight 9525 and set it on course to crash into an Alpine mountain, killing all 150 people on board including himself, prosecutors said on Thursday.
French prosecutors offered no motive for why 28-year-old Andreas Lubitz apparently took the controls of the Airbus A320, locked the captain out of the cockpit and deliberately set it veering down from cruising altitude at 3,000 feet per minute.
German police were searching his home for evidence that might offer some explanation for what was behind Tuesday's crash in the French Alps.