German prosecutors say that pilot Andreas Lubitz, suspected of intentionally crashing Germanwings Flight 4U 9525, may have hid an "illness" from his "employer and colleagues," while multiple German publications report that he had issues with depression. From the New York Times:
Prosecutors said that among the items found at Mr. Lubitz’s home was a doctor’s note excusing him from work on the day of the crash, and another note that had been torn up ... The German investigators said they had not found a suicide note or “any indication of a political or religious” nature among the documents secured in Mr. Lubitz’s apartment. “However, documents were secured containing medical information that indicates an illness and corresponding treatment by doctors,” Ralf Herrenbrück, a spokesman for prosecutors in Düsseldorf, said in a statement.
Per the BBC, the German tabloid Bild says Lubitz had a "severe depressive episode" in 2009. The paper Der Tagesspiegel reports via a source that Lubitz was being treated for depression at a university clinic in Dusseldorf, and both Bild and another outlet say that a note in his "aviation authority file" recommended regular psychological treatment.