Indian investigators say they have recovered critical evidence from the devastating Air India plane crash, including a DVR recording from on-board cameras and the plane’s black box. It comes as the lone survivor is speaking out and describing the moment he exited the plane.

It seemed impossible, but shortly after news broke that an Air India flight had crashed in the city of Ahmedabad, video started circulating on social media showing a man walking from the scene in a bloodstained shirt.