Investigators looking into the Air India crash that killed 260 people are trying to uncovering a ‘mistake’ made by the pilots. Early assessments by US officials suggest the crash was not caused by problems with the Boeing 787 Dreamliner. The findings suggest that switches controlling fuel flow to the jet’s two engines were turned off.

Preliminary findings of the investigation into the crash of London Gatwick-bound flight said to indicate pilots could have made fatal error

Details of a preliminary accident report have been submitted to officials, according to the Times of India. It could be released on Friday.