New Delhi/Ahmedabad, July 12 -- The preliminary investigation report into the Air India flight 171 crash will be released "very soon", aviation minister Ram Mohan Naidu said on Friday, the informal deadline according to international norms for an initial analysis that could offer some clues for what caused India's worst aviation disaster in decades that killed 260 people.

Saturday marks a month since the Boeing 787 crashed moments after take-off, with none of the observations of the plane's final moments offering any indication of what may have caused the jet to suddenly lose lift. On Friday, a report stated investigators are possibly looking at whether fuel to the engines were switched off - the third western media report to make the co...