A preliminary report released last week included detail about the fuel, saying that the fuel to the plane's engines appeared to have been shut off.

Indian investigators' preliminary report on the crash of an Air India flight that killed 260 people has put the focus squarely on the pilots and the aircraft's fuel switches.

A preliminary report into the crash released by India’s Aircraft Accident Investigation Bureau (AAIB) on Saturday said one pilot was then heard on the cockpit voice recorder asking the other why he cut off the fuel and “the other pilot responded that he did not do so”.