Jones was found dead in a deck chair with a gunshot wound to his head that Guyanese coroner Cyrill Mootoo stated was consistent with a self-inflicted gun wound. However, Jones' son Stephan believes his father may have directed someone else to shoot him. An autopsy of Jones' body also showed levels of the barbiturate Pentobarbital which may have been lethal to humans who had not developed physiological tolerance. Jones' drug usage (including LSD and marijuana) was confirmed by his son, Stephan, and Jones' doctor in San Francisco.