Andreas Lubitz, The 28-year-old co-pilot of the Germanwings deliberately crashed the Alps Plane disaster.
The co-pilot of the plane which crashed in the Alps activated the descent button and refused to open the cockpit door to the pilot.
Marseille prosecutor Brice Robin says the co-pilot who won a Federal Aviation Authority award in 2013 – wanted to “destroy the plane”.
He said: “We assume the (captain) went to the loo or something. The co-pilot is on his own in charge of the plane, and it is while he is alone that he uses the flight monitoring system which starts the descent of the plane.”
“We hear several cries from the captain asking to get in. Through the intercom system he identifies himself – but there is no answer. He knocks on the door and asks for it to be opened – but there is no answer.”
“I think the victims only realised at the last moment because on the recording you only hear the screams literally on the last moments of the recording.”
Prosecutors said there was no reason to suspect a terrorist attack.
The Plane had passed a routine maintenance check only the day before the flight.
Co-pilot Andreas Lubitz, 28, joined Germanwings in September 2013, directly after training, and had flown 630 hours.
Lufthansa said the captain had more than 6,000 hours of flying experience and had been with Germanwings since May 2014, having flown previously for Lufthansa and Condor.
Germanwings officials said victims included 72 German nationals, among them 16 school students. The Spanish authorities say there were 51 Spaniards.
Other victims were from Australia, Argentina, Britain, Iran, Venezuela, the US, the Netherlands, Colombia, Mexico, Japan, Denmark and Israel. And also the four cabin crew and two Pilots.
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