TULSA -- A murder investigation was opened by Tulsa Police after detectives discovered that a woman who went missing in 1981 was shot.
Monday, remains exhumed in 2015 were positively identified as Francine Frost after a DNA test.
RELATED: DNA test identifies remains of Muskogee woman, Francine Frost, who went missing in 1981
Investigators are now trying to find out more about the circumstances and why Frost was killed.
Detective Margaret Lovell with the Tulsa Police Department says, "The location of a missing person's remains is a very huge part of the investigation. It's a very pivotal clue because it tells you something about the suspect. There's a reason why a person's remains end up where they end up."
Detectives have not yet named a suspect in Frost's death.
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