It has emerged that the police scourging the home of the Germanwings co-pilot Andreas Lubitz have landed a "significant" clue that could offer a better perspective into what may have prompted him to take the devastating step.
Police officers have been searching through Lubitz's belongings in his flat in Dusseldorf, Germany, desperately looking for clues that could offer an explanation into why the 28-year-old deliberately crashed the flight into the French Alps.
So far, the investigative agencies and the airline have been at a loss over why the co-pilot for Lufthansa's budget carrier took sole control of the A320 airliner when the captain was out of the cockpit and slammed it into a fatal descent.
The terror angle has been ruled out for now with German interior minister Thomas de Maiziere saying that Lubitz had no known association with terrorist groups.
A total of 150 people were killed in the crash earlier this week -- including two babies and 16 school children.
"We wanted to search to see if we could find something that would explain what happened. We have found something which will now be taken for tests. We cannot say what it is at the moment but it may be a very significant clue to what has happened," said Markus Niesczery of Dusseldorf Police.
"We hope it may give some explanations," he told the Daily Mail.
The police also searched the house of his parents in Montabaur which Lubitz often frequented. The Dusseldorf police were seen removing boxes and large blue bags, including computer hard-disks, from both the residences.
In Dusseldorf, the police reportedly also rounded up Lubitz's roommate for questioning. His identity so far has not been revealed.