An Air India pilot asked why the doomed plane’s fuel had been cut off moments before it crashed.

A highly anticipated report released by Indian authorities just after midnight on Saturday said initial findings indicate that switches controlling fuel flow to the jet’s two engines were turned off, leading to a catastrophic loss of thrust at take-off.

All but one of 242 people on board the Boeing 787 Dreamliner were killed when the aircraft plunged into a medical student hostel in a built-up suburb last month, less than a minute after take-off from Ahmedabad airport.

Friends of the victims called the report’s findings a “slap in the face” and questioned how “something so trivial as a simple switch being deactivated” had caused such a catastrophe.

According to the report, one of the pilots is heard asking the other why “did you cut off” the fuel supply in the recovered cockpit voice recording.

The other pilot responded that he “didn’t”, according to the report.