Officials have linked forensic evidence from the 2004 murder scene of a 21-year-old Juilliard student to the scene of a recent Occupy Wall Street subway protest, NBC 4 New York has learned.

DNA evidence from the scene of Sarah Fox's murder in Inwood Hill Park eight years ago has been newly connected to DNA collected at the scene of an Occupy Wall Street subway station vandalism in March, NBC 4 New York first reported Tuesday.

Fox was found nude and strangled in the park in May 2004, days after she disappeared during a daytime jog. Investigators recovered her pink CD player in the woods just yards from her body.

Sources said Tuesday the DNA found on the CD player matches DNA found on a chain left by Occupy Wall Street protesters at the Beverly Road subway station in East Flatbush on March 28, 2012.

That Wednesday morning, protesters chained open emergency gates and taped up turnstiles in eight subway stations and posted fliers encouraging riders to enter for free.

A "communique" posted online later that day by the "Rank and File Initiative" described the act as a protest against service cuts, fare hikes and transit employees' working conditions.

It was attributed to "teams of activists, many from Occupy Wall Street... with rank and file workers from the Transport Workers Union Local 100 and the Amalgamated Transit Union."

Sources said they have not connected a person to the common DNA. There's no immediate evidence that the DNA belongs to the protesters who chained open the gates.

No one was arrested in the March incidents. Police are continuing to investigate, and are now working to try to identify the source of the DNA found in common with the chain and the CD player.

Dr. Lawrence Koblinsky, a forensics expert at John Jay College of Criminal Justice, said the DNA link was a major clue in the investigation, one that could potentially break the case.

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DNA Links Murder Scene, OWS Protest Scene