A preliminary assessment in last month’s disaster focusing on fuel being cut to both engines only deepened the mystery for people grieving loved ones.

The report, released in the wee hours of Saturday, stated that the switches controlling fuel flow to both engines appeared to have been turned off shortly before takeoff, resulting in a fatal loss of

The AAIB report ruled out pilot intoxication, bird strikes, or fuel contamination as contributing factors. Investigators have recovered critical components for further analysis, and both the US National Transportation Safety Board (NTSB) and the UK government are involved.