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MIAMI (CBSMiami) – The Monroe County Sheriff’s Office is investigating the death of a woman in Marathon.

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The woman was found dead by a fisherman Wednesday at shortly before 1 p.m. Her body was in a wooded area just north of the Vaca Cut Bridge, authorities said.

Detectives describe the woman as being about 50-to 60-year-old, with sandy brown hair. She is about 5-foot-7 and weighs between 150 to 180 pounds.

They are asking for the public’s help in identifying the woman.

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The Sheriff’s office said there were “obvious signs” of foul play.

An autopsy will be conducted to determine the manner of death.

Authorities said they were speaking to a person of interest in the case.

Sheriff Rick Ramsay said there is no pending threat to the public regarding this case.

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Anyone with information is urged to call Crime Stoppers at 1-866-471-8477. Tipsters can remain anonymous.