The co-pilot believed to have deliberately crashed a Germanwings plane was treated for suicidal tendencies "several years ago", before he received his pilot's licence, German prosecutors said Monday.
"In the ensuing years and up until recently, he had doctors' visits and was written off sick but showed no sign of suicidal tendencies or aggression towards others," said Ralf Herrenbrueck, spokesman for the prosecutor's office in the western city of Duesseldorf.