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.
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Now, officials think the man's teeth may match dental records of missing men in Florida and Illinois.
Investigators just shared a sketch of the man.
The remains will undergo DNA testing in hopes of finding a match.
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