The British man who was the sole survivor of last week's Air India plane crash has helped lay his brother to rest at a funeral in western India. Vishwashkumar Ramesh's brother Ajay was also on the ill-fated flight but did not survive the tragedy.

The preliminary finding gives investigators a new line of inquiry as they study a crash that killed all but one of the plane’s passengers.

The crash of an Air India Boeing 787 Dreamliner seconds after takeoff from Ahmedabad city, killing all but one of the 242 people on board, is the world's worst aviation disaster in a decade.