There are new leads in a 40-year-old cold case.
Investigators think a man found frozen to death in a Pennsylvania cave could be linked to two missing persons cases in two different states.
The man was found on the Appalachian Trail in Berks County in 1977.
Now, officials think the man's teeth may match dental records of missing men in Florida and Illinois.
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Investigators just shared a sketch of the man.
The remains will undergo DNA testing in hopes of finding a match.
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