A cockpit recording of dialogue between the two pilots of the Air India flight that crashed last month indicates the captain cut the flow of fuel to the Boeing 787 jet's engines, the Wall Street Journal reported on Wednesday.

The report said the first officer, who was flying the Boeing 787 Dreamliner, asked the more experienced captain why he moved the fuel switches to the "cutoff" position seconds after lifting off the runway.

An official report on the world’s deadliest aviation accident in a decade, seen by CNN, has answered one key question – but raised others.