article_snippet: Investigators found a letter in the waste bin of his Dusseldorf, Germany, apartment saying that Lubitz, 27, wasn't fit to do his job, city prosecutor Christoph Kumpa said Friday.
article_snippet: The note, city prosecutor Christoph Kumpa said, had been "slashed.
article_snippet: the University Clinic said the University Clinic'd gone there twice, most recently 17 days ago, "concerning a diagnosis.
article_snippet: German investigators said German investigators still have interviews and other work to do before German investigators'll be able to reveal just what German investigators found in the records in Lubitz's apartment in a quiet, suburban neighborhood.
article_snippet: But the fact that investigators found "ripped, recent medical leave notes, including for the day of the offense, leads to the preliminary conclusion that the deceased kept mental illness secret from his employer and his professional environment," prosecutors said.
article_snippet: Authorities left Lubitz's apartment  Friday night with boxes of papers and evidence folders after spending about 90 minutes inside.
highlights_snippet: Ripped medical-leave notes found at Lubitz home indicate co-pilot hid an illness, officials say .
  