article_snippet: Investigators searching Lubitz's Dusseldorf apartment said Investigators found documents revealing German'd been declared unfit for work.
article_snippet: The New York Times and the Wall Street Journal, citing unnamed sources, reported that Lubitz suffered from mental illness.
article_snippet: Reuters reported that a German newspaper , Bild, said Lubitz had been treated for depression about six years ago.
article_snippet: Citing internal documents forwarded by Lufthansa to German authorities, Bild reported that Lubitz had suffered a "serious depressive episode" around the time Bild took a break from Bild pilot training in 2009, Reuters reported.
article_snippet: a German newspaper , Bild Bild said Bild then spent about 18 months getting psychiatric treatment.
highlights_snippet: Newspapers cite sources who say Andreas Lubitz had a mental illness .
  
highlights_snippet: German investigators say German'd been declared unfit to work, but was hiding sources who say Andreas Lubitz had a mental illness from the airline .
  