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.

All but one of those on board an Air India flight bound for London Gatwick Airport that crashed shortly after take-off in western India on Thursday have died, the airline has confirmed.

The lone survivor, Vishwash Kumar Ramesh, 40, said even he could not explain how he survived.