A man is lying dead in a field

A man is lying dead in a field where no one is around.
His head is split open and his legs are disfigured.
Near to him, there is an unopened package.
No living organism can be found anywhere at the crime scene.
How did he die?

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The man had jumped from an aircraft and when he tried opening his parachute, he was unsuccessful. He hit the ground crushing all his bones and died on the spot. The unopened package found near his body is the parachute.