ROGERS COUNTY, Okla. - Officers are working to recover human remains from an 18-year-old cold case.
Deputies are looking for evidence in the case of missing person Dione Fox.
Fox was reported missing after she failed to show up for court.
Her car was found four months later in Missouri.
The sheriff says a tip led to Monday's search in Rogers County, which is expected to continue Tuesday.
Fox's daughter says she thinks about what happened to her mom every day.
"My mom was my rock. She still is. She gives me the reason to be the way I am," said Desiree Fox.