Transcript for Questions About Germanwings Co-Pilot's Medical History
And we begin with two major developments in the case of that jet that crashed into the alps. Tonight, the airline now acknowledging it knew of that young co-pie lot's troubling medical history. They knew he suffered a severe bout of depression, even before they hired him. This new image of the pilot emerging. They knew as far back as his training. Golden gate bridge there in the background. Also tonight, there are now reports there could be a video from inside the plane capturing those final moments. And that's where ABC's Alex Marquardt begins tonight. Reporter: Retrieved from the rubble of the shattered plane, a harrowing 15-second video reportedly found of the final moments of germanwings flight 9525. Investigators won't confirm, but two european newspapers say they've watched it. The editor-in-chief of Paris match telling ABC news it's "The worst video he's ever seen." This, on the day of a bombshell admission from the airline. Lufthansa now revealing they knew Andreas lubitz once suffered a serious depressive episode, but hired him anyway. Lubitz joined lufthansa's intensive pilot training school in 2008. The very next year, he took a leave of absence. The airline today revealing that when he returned, lubitz e-mailed them medical records documenting his depression, but he was allowed to resume his training, some of it in the United States. And in 2013, he finally achieved his life-long dream of becoming a pilot. Somewhere, someone allowed this pilot to continue on his training even in spite of what he had told them is quite surprising. Reporter: As investigators dig into lubitz's life, they discovered that he was once treated for suicidal tendencies. And that even as he flew passenger jets, doctors were issuing him notes exempting him from work. Including one never submitted, for the day of the crash. But up until now, lufthansa's CEO has defended the decision to let lubitz fly, saying he was fit in all areas, 100%. And even today, lufthansa insisting that when lubitz boarded that fatal flight, he was medically qualified to fly.
This transcript has been automatically generated and may not be 100% accurate.