Investigators in India are studying the black boxes of a Boeing 787 Dreamliner after recovering them from the aircraft wreckage to ascertain the cause of last week’s plane crash that left at least 270

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.

There were 242 passengers and crew on board the Boeing 787-8 Dreamliner, including 169 Indian nationals, 53 Britons, seven Portuguese nationals and one Canadian. At least eight local people, including four medical students, living in a residential area of Ahmedabad where the plane came down have also died, a senior health official told the BBC.