• Lubitz Evidence

Lubitz Evidence (Photo : REUTERS/Wolfgang Rattay)

Prosecutors say that Andreas Lubitz, the German co-pilot who deliberately caused the plane to crash in the French Alps, did not tell Germanwings he was not fit to work and also hid his medical condition. A bunch of torn medical notes have been found by investigators in Lubitz's homes, including one for that fatal day.

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On Tuesday, the Airbus 320 en route to Dusseldorf from Barcelona, crashed into the mountains, killing all the people on board. Evidence showed that 28-year old German national intentionally locked the pilot out of the cockpit and brought the plane down.

Police have already recovered hundreds of pieces of human remains but say that recovery could take weeks. They also told reporters that no bodies have been found intact.

Retrieval efforts, investigators say, will be a daunting task since they will be working with shattered pieces of the aircraft. Moreover, the search area covers more than a square mile.

A DNA comparative analysis will be done to identify the bodies and DNA samples will be taken from victims' relatives to be used for the process.

Meanwhile, the letter from a medical doctor indicating that the co-pilot was "unfit to work" would have prevented Lubitz from flying that day, investigators told.

According to German media, before becoming a pilot, Lubitz was treated for a depressive episode. He also took a break from training which was not unusual among pilot trainees.

However, Lufthansa, Germanwings' parent company found no indications Lubitz was a risk.

On Thursday, Carsten Spohr, chief executive of the airline was quoted as saying, "After he was cleared again, he resumed training." He added that the co-pilot passed all the tests and checks.

Meanwhile, in response to the Germanwings' crash, Lufthansa is now adopting the 2-person cockpit rule and other airlines worldwide are already implementing the same policy, reported NBC News. In the United States, it is mandatory that two qualified people should be in the cockpit at all times.

As for new developments CNN reported that a medical facility in Dusseldorf said that they did not treat Lubitz for depression. Now, questions have been circulating on what really drove the German co-pilot to do such a thing.