BERLIN: German prosecutors say the co-pilot who crashed Germanwings Flight 9525 researched how to get hold of deadly drugs and the possibility of a living will — a finding that suggests he was mulling other means of killing himself until the last minute.

Duesseldorf prosecutor Christoph Kumpa confirmed a report Friday in German daily Sueddeutsche Zeitung that Andreas Lubitz searched on the Internet in March for ways of getting hold of potassium cyanide, valium and lethal combinations of medicines. He also searched for the term “living will” on the afternoon of March 23, the day before the crash.