The co-pilot suspected of deliberately flying a Germanwings plane into the French Alps searched the Internet for ways to commit suicide shortly before the crash that killed 150 people, German prosecutors said on Thursday.
Judicial officials in his hometown of Duesseldorf said a computer found in his home also had revealed searches on cockpit doors and safety precautions related to them.
The growing evidence of suicide preparations came as French police discovered the second black box flight recorder, raising their hopes of showing in detail how the co-pilot, 27-year-old Andreas Lubitz, set the plane on its fatal course.