Metallica helping FBI track down a killer (VIDEO)

The heavy metal band Metallica is showing its softer side by helping the FBI track down a man wanted in the death of Morgan Harrington, a Virginia Tech student who disappeared after one of the band's concerts.

In the video, Metallica lead singer James Hetfield asks fans to provide any information to help find her killer.

"Remember, any information—no matter how small you might think it is—could be that crucial piece investigators need to help solve the case," Heitfield said. 

Along with the PSA, the band is also offering $50,000 for information leading to an arrest. 

Harrington, a 20-year-old aspiring teacher, disappeared after an October 2009 Metallica concert in Charlottesville, Va. Her skeletal remains were discovered in a field about 10 miles from the concert venue, according to CBS.

SInce then, DNA evidence has linked her murder to an unknown suspect in a September 2005 sexual assault in Fairfax, Va, according to NPR.

Gil Harrington, Morgan's mother, said she and her husband are hopeful the new publicity effort will lead to an arrest.

"Our big motivation now is to catch this man and help save the next girl because he is a predator at the top of his game," Harrington told the Associated Press on Wednesday. 

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