The investigation started when a friend of Michael Shaver asked investigators to do a well-being check.
He hadn't heard from Shaver since 2015.
At the start of the investigation, Michael Shaver's wife, Laurie Shaver, cooperated with detectives, but then said they would have to speak to her lawyer, deputies said.
>>Read: Woman lawyers up after police discover husband missing since 2015
“She is a person of interest and we are keeping close tabs,” said Herrell.
Records show the couple had a domestic dispute in 2014 in which Laurie Shaver hit her husband with a gun. Michael Shaver was arrested because deputies believed he pulled the weapon first.
“He came out of the house all bloody. I guess she hit him with a gun or something,” said Walter Strand, a neighbor who recalled the incident.
>>Read: Lake County man reported missing after 3 years has no cellphone, bank activity
There are no records that show the couple ever divorced, but neighbors said Laurie Shaver was remarried and had the ceremony in the backyard in the area where investigators have been searching.
“The only thing I've ever seen dead out here might have been a squirrel or something. I mean, we have coyotes out here, we have wild turkeys. But no human bodies,” said Strand.
Members of Michael Shaver’s family who live out of state arrived at the home Saturday and spoke to investigators.
Investigators said Michael Shaver hasn't had any cellphone or bank activity since his disappearance.