A preliminary investigation into the crash of an Air India passenger jet last month that killed 260 people raises additional questions about the incident and the investigation is far from over, Air India's CEO said in a memo on Monday.

NEW DELHI – A preliminary report into last month’s catastrophic Air India Boeing 787 Dreamliner crash, which claimed 260 lives and stands as the world’s deadliest aviation accident in a decade, has revealed a critical moment of confusion in the cockpit after the aircraft’s engines abruptly lost fuel just seconds after takeoff.