The fiancé of Melinda's daughter has been charged with aggravated murder.
Jeffrey Scullin, 20, was arrested Tuesday. His bond was set at $1 million.
Authorities did not release any additional information about the case in a news conference Tuesday afternoon.
Scullin was one of the people who called 911 when Melinda's body was found at their home last Monday night.
Hear a portion of the 911 call in the media player above.
He told dispatchers he had just arrived at the home with Melinda's husband.
Melinda was supposed to meet her husband at Brew Kettle for dinner that night but never arrived.
Police said Scullin lived at the home. The police report from the night of the homicide shows his fiancé — Melinda's daughter — also lived there.
Just one week earlier, Scullin can be heard calling 911 again, this time to report a break-in. He told the dispatcher the person he saw looked like him.
"Probably a male," he can be heard saying on the call. "They were around my size and I'm pretty big. Blue hoodie and what colored pants?"
The medical examiner ruled Melinda died from gunshot wounds and "sharp force injuries of the trunk with skeletal, vascular and visceral injuries."