article_snippet: Sicknotes found at Andreas Lubitz apartment in Dusseldorf by German police could form a key part of any legal case launched by the families.
article_snippet: Andreas Lubitz, pictured, is believed to have hidden a mental health illness from Andreas Lubitz employers .
article_snippet: German newspaper Bild reported that Lufthansa's Aeromedical Centre has passed internal documents to investigating authorities which claimed that Andreas Lubitz suffered from depression and anxiety during training and went through a 'serious depressive episode'.
article_snippet: Relatives of some of Tuesday's victims have reacted angrily to the discovery of the torn up sick note and questions over Andreas Lubitz's mental health.
article_snippet: Mr Knipping said unless a family member comes forward and reports a family member concerns, then it is possible for cases such as Lubitz to 'slip through'.
highlights_snippet: German prosecutors have found evidence questioning German mental health .
  
highlights_snippet: Relatives could sue Germanwings over Relatives failure to spot Lubitz's illness .
  