Germanwings co-pilot contacted dozens of doctors before suicidal plane crash

Andreas Lubitz, the Germanwings co-pilot who killed 150 people by crashing a plane into the French Alps on March 24, apparently contacted dozens of doctors before the fateful flight.

However, it is unclear what condition Lubitz was seeking treatment for, Marseille prosecutor Brice Robin told The Associated Press. Robin is leading the investigation into the crash.

Investigators had previously disclosed that Lubitz had a history of depression, of which Germanwings and its parent company Lufthansa were aware. The investigation has also revealed that Lubitz intentionally crashed the plane and locked the pilot out of the plane's cockpit.