An Air India executive is still urging its staff not to jump to any conclusions as the investigation into the crash that killed 260 people last month continues. A preliminary report into the June crash found that the plane's fuel control switches had been flipped off one by one.

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.

Air India Chief Executive Campbell Wilson has urged employees not to jump to conclusions about the cause of last month’s fatal crash involving one of the airline’s Boeing ( NYSE: BA) 787 Dreamliners, emphasizing that the investigation remains ongoing and far from complete, The Wall Street Journal reported Monday.