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OKLAHOMA CITY - The sheriff's office continues to look for leads to solve its oldest unsolved murder case.

On April 18, 1980, a group of fisherman discovered the body of a woman on the east bank of the North Canadian River, 20 miles east of Oklahoma City and near Jones. She had been shot to death, and then covered with lime. Authorities believe her killer thought it would speed up decomposition, but it actually mummified her and preserved evidence.

Investigators appropriately nicknamed her "The Lime Lady."

Almost 35 years later, investigators still don't know who she is; but they haven't given up on their quest to find answers and lay her to rest.

Thanks to the National Missing and Unidentified Persons System, authorities now have a DNA profile of "The Lime Lady" but they need something to compare it against.

Mark Myers with the Oklahoma County Sheriff's Office said "That is the most frustrating thing about this, because we can`t even begin to figure out who killed her, who is responsible for her death, until we figure out who she is. So anytime I`ve spoken with our investigators about this case, you can just really see the frustration in their face because they just do not know."

They're convinced someone, somewhere, knows something that will help solve this decades-old mystery.

"All it takes is just one person, just one person to come forward and say `You know, I had an aunt who was missing. I had a sister who was missing all these years ago.` And then we can run that DNA profile." Myers said.

The victim is:

White female

Between the ages of 18 and 25

5’6″ to 5’7″ tall

118 to 120 pounds

Brown hair

Appendectomy scar

She had extensive dental work with some teeth out of alignment

She had a tattoo of a small heart over the left breast

The heart was colored red with blue ink outlining it

The sheriff's office believes "The Lime Lady" may have been a dancer. Based on the area her body was dumped, they also believe that could mean her killer's lived nearby.

If you have any information that could help solved this mystery, call the sheriff's office at (405) 713-1017.