Investigators probing the crash of golfer Payne Stewart's Learjet have recovered all that remains of the wreckage.
It's now in a hangar in Aberdeen, South Dakota. Investigators will sort through the debris, and if any key pieces are missing,
they may use metal detectors to search the crash site again.
But one government official says that because the plane and the victims' bodies were so severely damaged, we may never know the
cause of the crash.
Stewart and five other people were killed Monday when their plane flew for hours across the country, apparently on autopilot,
before it ran out of fuel and crashed.
Investigators are looking into whether the plane suffered a loss of cabin pressure. The National Transportation Safety Board says
it's also looking closely at three similar Learjet crashes over the past two decades.