As the investigation continued Friday into the horrific Air India Boeing 787 Dreamliner crash that killed at least 290 people, the sole survivor is doing well but is "psychologically disturbed."

There have been cases of a very small number of survivors in very serious accidents, but it is "very rare" for there to be only one, a professor told Newsweek.

By Sudipto Ganguly and Abhijith Ganapavaram AHMEDABAD, India (Reuters) -Rescuers searched for missing people and aircraft debris in charred buildings in Ahmedabad on Friday after more than 240 people were killed in an Air India Boeing 787 crash,