A French prosecutor explained in a press conference that the co-pilot of the Germanwings flight appears to have deliberately crashed the Airbus. 

Brice Robin, a Marseille prosecutor, said that the plane's co-pilot, 28-year-old Andreas Lubitz (photo below), didn't seem distressed in the flight's final 10 minutes before it crashed on Tuesday in the French Alps. 

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"He was breathing normally, it wasn't the breath of somebody who was struggling," Robin said. "He didn't say a single word, it was total silence."

Lubitz is of German descent. He graduated from flight school two years ago and only had 630 hours of flight time.

His religion is not known at this time. Robin said he has no known ties to terror groups.

The New York Post reported:

The co-pilot’s acquaintances in the German town of Montabaur said he showed no signs of depression when they saw him renewing his glider pilot’s license recently.

“He was happy he had the job with Germanwings and he was doing well,” said Peter Ruecker, a member of the glider club. “He gave off a good feeling.”

Lubitz was accepted as a Lufthansa pilot trainee after finishing a tough German college prep school, Ruecker said, describing Lubitz as a “rather quiet” but friendly person.

In a death notice posted this week by the LSC Westerwald flight club, where Lubitz was a member, the group said Lubitz had “fulfilled his dream” of becoming a pilot. 

Evidence from a cockpit voice recorder revealed that the older, more experienced pilot was locked out of the cockpit after likely using the restroom.

The pilot could be heard on the voice recorder banging on the door, but could not get back in.

"I think he voluntarily refused to open the door and he turned the button to get the plane down," Robin said. 

The prosecutor added that the passengers on the plane could be heard screaming at the last moments before the plane crashed in the French Alps on Tuesday. 

"I think the victims only realized at the last moment, because on the recording you only hear the screams literally at the last moments," he said. "In the cockpit, nothing, never no words during the 10 last minutes." 

Robin explained that the cockpit door could only be opened from the inside. 

Robin said that before the pilot left the cockpit, the conversation heard on the voice recorder between the two seemed "pleasant."

The plane was on its way from Spain to Germany when the plane crashed. All 150 people aboard the plane were killed.

Stay tuned to Fox News for continuing updates on this story.

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