Germanwings airlines co-pilot Andreas Lubitz, who had joined the airline almost a year ago deliberately 'accelerated' the plane after locking out the captain to crash the jetliner into the French Alps.
Based on the recordings found in the blackbox, a French Prosecutor said Lubitz was fully conscious as he 'accelerated' and crashed the plane.
"He voluntarily refused to open the door of the cockpit to the pilot and voluntarily began the descent of the plane," French prosecutor Brice Robin said. "We could hear appeals from the pilot to access the cockpit, but no response from the cockpit," the prosecutor said adding that Lubitz "had no reason to do it."
Details about the co-pilot are still emerging. His full name is Andreas Guenter Lubitz and he was 28 years old as per the the Federal Aviation Administration (FAA) records.
Those who knew Lubitz claim that he was a "rather quiet, but a friendly young man." According to AFP, he was registered as a member of a private flying club in Germany, LSC Westerwald, and was an avid runner, who actively participated in local races.
Investigators stated that the passengers were unaware of the crash till the last moment and that their death was instant, hitting a mountain at 700km/h.
"I don't think the passengers realised what was happening until last moments because on recording you only hear screams in final seconds."
As per reports by German media, Lubitz had 630 flight hours experience and joined budget airline Germanwings straight out of Lufthansa Flight Training School in Bremen in September 2013.
During the news conference, the French prosecutor refused to give information on Andreas Lubitz's religion, saying: "I don't think it's necessarily what we should be looking for."
Lubitz was from the western town of Montabaur and lived with his parents, but also had a flat in Duesseldorf, which is a Germanwings hub and the city were the 4u9525 jetliner was bound to from Barcelona.
The captain of the Germanwings flight has not officially been identified. It is reported that he had more than 10 years of experience and had clocked more than 6,000 hours of flight time on A320 alone.
However, the Daily Bild has identified him as German national Patrick S, who was a father of two.