who killed John Wheeler?

John P. Wheeler was found dead in a Delaware landfill, obviously the coroner ruled it a homicide.
Mr. Wheeler was
- a member of the Council on Foreign Relations,
- consultant to the Mitre Corporation,
- an expert in chemical & biological warfare
- served many roles in the military & government,
- had the highest security clearance,
& was
- aide to 3 United States presidents: Reagan, Bush Sr. & W.

Floor boards were found ripped up in the kitchen of his home.
The murder still remains a mystery.