Germanwings co-pilot 'hid illness'

The BBC has an article about the recent crash, and the cause:

The co-pilot suspected of deliberately crashing a Germanwings airliner into the French Alps hid details of an illness, German prosecutors say.
Torn-up sick notes were found in the homes of Andreas Lubitz, they say, including one for the day of the crash, which killed 150 passengers and crew.
A German hospital confirmed he had been a patient recently, but denied reports he had been treated for depression.
Lufthansa, which owns Germanwings, has announced new flight safety rules. The new regulations are meant to ensure pilots are never left alone in the cockpit. Data from the voice recorder suggests Lubitz purposely started an eight-minute descent into the mountains while keeping the pilot locked out of the flight deck.
There were no survivors when Flight 4U 9525 crashed in a remote mountain valley while en route from Barcelona in Spain to Duesseldorf in Germany. Prosecutors say there was no evidence of a political or religious motive for his actions and no suicide note has been found.
At the scene, Anna Holligan of BBC News in Montabaur:

Two officers stand watch at the end of a suburban cul-de-sac. International television crews focus their cameras on Andreas Lubitz's family home. The blinds are down. A candle has been placed on his parents manicured lawn, with an image of hands clasped in prayer.
Neighbors describe him as a "quiet, affable man". They are struggling to accept that the 27-year-old they once knew could be capable of committing mass murder. Investigators carrying boxes of evidence and a computer have come and gone. With the discovery of a discarded sick note in his Duesseldorf apartment and confirmation that he attended a medical clinic just days before the crash, the suggestion is that this quiet man was hiding something.
That secret may eventually reveal why he took not just his own life but the lives of 149 others. The search for bodies and debris continues.

In a statement (in German), prosecutors said they had seized medical documents from Lubitz' 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 Lubitz had attended the hospital on 10 March 2014 and again 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 Lubitz had been suffering from a physical, rather than a mental, illness.
The theory that a mental illness such as depression had affected the co-pilot was suggested by German media, quoting internal aviation authority documents. They said he had suffered a serious depressive episode while training in 2009. He reportedly went on to receive treatment for a year and a half and was recommended regular psychological assessment. Lubitz' employers confirmed his training had been interrupted, but they insisted that he had only been allowed to resume training after his suitability was "re-established".
Police have been coming and going at the home of Lubitz' parents north of Frankfurt, which is also a focus of intense media attention
In the hamlet of Le Vernet, in France, a "viewing tent" was set up where families could look in the direction of the crash site. Families laid flowers and photographs in memory of those lost School students in Haltern, Germany, attended a memorial service for sixteen students and two teachers who died in the crash on their way home from a study exchange
Lufthansa announced it would adopt the "rule of two" as soon as possible, after other airlines swiftly moved to change their safety procedures. "Under the new procedure, two authorised persons must be present in the cockpit at all times during a flight," it said.
Recovery efforts are continuing at the crash site on the third day following the crash.
Investigators continue to comb the crash site for body parts, debris, and the second "black box", which records flight data.
Family members of some of the passengers and crew who died have visited Seyne-les-Alpes, France, near the crash site.
Families are providing DNA samples to allow for identification of victims' remains.
Other incidents thought to be caused by deliberate pilot action:

29 November 2013: A flight between Mozambique and Angola crashed in Namibia, killing 33 people. Initial investigation results suggested the accident was deliberately carried out by the captain shortly after the first officer (also known as the co-pilot) had left the flight deck.
31 October 1999: An EgyptAir Boeing 767 went into a rapid descent thirty minutes after taking off from New York City, killing 217 people. An investigation suggested that the crash was caused deliberately by the relief first officer but the evidence was not conclusive.
19 December 1997: More than a hundred people were killed when a Boeing 737 travelling from Indonesia to Singapore crashed. The pilot, suffering from "multiple work-related difficulties", was suspected of switching off the flight recorders and intentionally putting the plane into a dive.

Rico says he thought it was the responsibility of the physicians to mention this sort of thing, patient privacy be damned (and Rico suspects the relatives of the dead would agree)...