Investigators said Wednesday they do not have "the slightest explanation" at this stage on the cause of the Germanwings plane crash in the French Alps that killed 150 people.
"At this stage, clearly, we are not in a position to have the slightest explanation or interpretation on the reasons that could have led this plane to descend... or the reasons why it did not respond to attempts to contact it by air traffic controllers," said Remi Jouty, head of French air crash investigation agency BEA.