A U.S. Census worker found dead in a secluded Clay County cemetery killed himself but tried to make the death look like a homicide, authorities have concluded. Bill Sparkman, 51, of London, might have tried to cover the manner of his death to preserve payments under life-insurance polices that he had taken out. The policies wouldn’t pay off if Sparkman committed suicide, state police Capt. Lisa Rudzinski said. “We believe it was an intentional act on his part to take his own life,” said Rudzinski, who helped lead the investigation.