Reuters reports German newspaper says Lubitz took break in 17 days ago due to depression . Ripped medical-leave notes found at his home indicate co-pilot hid an illness , officials say . Investigators found no goodbye letter or evidence of political or religious motivation .
Reuters reports German newspaper says Lubitz took break in 2009 due to depression . Ripped medical-leave notes found at his home indicate co-pilot hid an illness , officials say . Investigators found no goodbye letter or evidence of political or religious motivation .