Too much moose meat and antlers strapped to a wing caused a deadly small plane crash in Alaska, a nearly two-year long investigation by the National Transportation Safety Board determined in a report released Tuesday.

After Alaskan Congresswoman Mary Peltola’s husband Eugene Peltola Jr. died in a 2023 plane crash, an official report has confirmed large amounts of moose meat onboard contributed to the tragedy.

The National Transportation Safety Board concluded its investigation into the crash and believes it knows why the plane crashed - it was overloaded with moose meat.