They found no suicide note or confession, "nor was there any evidence of a political or religious background to what happened."Instead, they claim to have found evidence that the co-pilot was suffering from, and being treated for, an unspecified illness which he was concealing from his employer. No official at this point is admitting what his illness might have been.
The illness likely was clinical depression from which he had suffered some years earlier. It is also likely that certain aviation people knew of his illness but said nothing out of a misguided "let's don't victimize the poor lad" political correctness. Result: 150 people died so his feelings weren't hurt.
Pilots are required to be physically healthy, and grounded if they are not. Mental health should be treated no differently. Covering up his depression is as bizarre, and deadly, as letting a known pedophile teach children or run an orphanage.
