http://www.bbc.co.uk/news/world-europe-32063587
The co-pilot of the Germanwings plane that crashed into the French Alps on Tuesday appeared to want to "destroy the plane", French officials said.
Marseille prosecutor Brice Robin, citing information from the "black box" voice recorder, said the co-pilot was alone in the cockpit.
He intentionally started a descent while the pilot was locked out.
Mr Robin said there was "absolute silence in the cockpit" as the pilot fought to re-enter it.
Air traffic controllers made repeated attempts to contact the aircraft, but to no avail, he said.
Passengers could be heard screaming just before the crash, he added.
The co-pilot, now named as Andreas Lubitz, 28, was alive until the final impact, the prosecutor said.