New Upload 2015. The co-pilot of Germanwings Flight 9525 purposely crashed the plane into the French Alps, killing all 150 people on board, officials said Thursday. "We at Lufthansa are speechless that this aircraft has been deliberately crashed by the co-pilot," said Carsten Spohr, CEO of Lufthansa, which owns Germanwings. Marseille prosecutor Brice Robin said the co-pilot, 27-year-old German national Andreas Lubitz, apparently "wanted to destroy the aircraft." It's unknown whether Lubitz planned his actions, Robin said. But he "took advantage" of a moment in which the pilot left the cockpit and "activated the descent," which can only be done deliberately. New details released Thursday appeared to support the startling revelation that someone set the plane on a crash course. Transponder data shows that the autopilot was reprogrammed during the flight by someone inside the cockpit to change the plane's altitude from 38,000 feet to 100 feet, according to Flightradar24, a website that tracks aviation data. The plane's cockpit audio recorder captured horrific sounds. The captain, somehow locked out of the cockpit, can be heard banging on the door, Robin said. And screaming can be heard on the audio recording for the final few minutes of the flight. For those on board when the plane plunged into the mountains, Robin said, death was instantaneous. Who was co-pilot Andreas Lubitz? THANK YOU FOR CHECKING US OUT. STOP BY ANYTIME! Let US know what is on YOUR MIND. FEEL FREE TO (LIKE) SUBSCRIBE and (SHARE) our Videos. DON'T FORGET TO LIKE US ON FACEBOOK~ AND FOLLOW US ON TWITTER~ PLUS Check out our partner channel