Based on preliminary information, deputies say that it appears the husband shot his spouse multiple times before turning the gun on himself.
Panettiere, 36, died Sunday at a residence in Greenville, South Carolina.
The statement comes ahead of a prayer rally on Wells' birthday.
Hayden Panettiere died on Sunday. She was 36.
Authorities said there is no indication "at this time" that the remains, which appear to have been at the location for an extended period of time, are connected to the Nancy Guthrie investigation.