From the BBC website:
'In a
statement (in German), prosecutors said they had seized medical documents from Mr Lubitz's two residences - his Duesseldorf flat and his parents' home north of Frankfurt - which indicated an "existing illness and appropriate medical treatment".
The "fact that, among the documents found, there were sick notes - torn-up, current and for the day of the crash - leads to the provisional assessment that the deceased was hiding his illness from his employer", the report states.
Germanwings confirmed it had not been given a sick note for the day of the crash.
Duesseldorf's University Hospital issued a
statement (in German) saying Mr Lubitz had attended the hospital on 10 March and last month.
Adding that it had handed his medical records over to prosecutors, it said
reports the co-pilot had been treated there for depression were incorrect.
Germany's Rheinischer Post newspaper, which spoke to the hospital, quoted its own unnamed sources as saying Mr Lubitz had been suffering from a
physical, rather than a mental, illness.'
I had wondered if he was ill, I mean physically ill, yesterday thus my post asking about the dates of his medicals (I think he had one due in June).