' The co-pilot of Flight 9525 which crashed in the French Alps wanted to "destroy the plane", a prosecutor has said.
Andreas Lubitz, who was 28 and a German national, is understood to have joined the Germanwings airline in 2013 straight after training.
It is also reported Lubitz had been included by the Federal Aviation Administration (FAA) on its database to show he had met or exceeded its pilot certification standards, which aim to "reduce pilot errors that lead to fatal crashes".
The certfication is seen as the difference between "a safe flight and one that ends in tragedy".
Marseille prosecutor Brice Robin says Lubitz was alone at the controls of the Airbus A320 and "intentionally" put the plane into the disastrous descent.
He had refused to let the captain back into the cockpit.
Mr Robin said Lubitz had never been flagged as a terrorist.
But pressed over Lubitz's religion, he said: "I don't think this is where this lies. I don't think we will get any answers there."
Mr Robin said the plane's black box recordings showed Lubitz "was breathing normally, it wasn't the breathing of someone who was struggling".'
' But pressed over Lubitz's religion, he said: "I don't think this is where this lies. I don't think we will get any answers there."'