OVID TOWNSHIP, Mich. (AP) — Detectives still have not settled on a motive in the 2006 killing of an Arizona couple in Clinton County and leads are coming in at a slower place, police say.
Investigators still do not know why the house that sits at the edge of a farm field in Ovid Township was targeted. The couple was staying at the house while their daughter and her family were out of town.
"It's what we refer to as a real whodunit," County Undersheriff Jack Phillips told the Lansing State Journal.
The unsolved homicides of Thomas and Viola Hefton remain one of the mid-Michigan county's biggest mysteries, the State Journal reported Monday.
Son-in-law Larry Spitler, his wife and two sons live with that mystery.
"I think about it every single day, at some point in the day," Spitler said. "It's not something you forget."
The Heftons, both in their mid-70s, were visiting from Tucson, Ariz., and were killed the night of July 2, 2006.