article_snippet: Following a search of the co-pilot Dusseldorf apartment, investigators revealed investigators had found torn-up sick leave notes - current ones and one issued for the day of the disaster.
article_snippet: French prosecutors had previously been signed off from training with depression in 2008 and was reportedly receiving mental health support up until Tuesday's crash.
article_snippet: The 28-year-old was also in the middle of the 'relationship crisis' with French prosecutors girlfriend in the weeks before Tuesday's crash and may have been struggling to cope with a break-up, German newspaper Bild reported.
article_snippet: French prosecutors have opened a criminal investigation for what appears to be a case of suicide involving mass murder .
article_snippet: Officers  found 'evidence of mental illness' but no suicide note, Der Spiegel reported.