James Hetfield of Metallica filmed a PSA and the band has offered a large reward to the public in solving the murder of Virginia Tech student Morgan Harrington.
Harrington went missing following the heavy metal band's October 9, 2009, concert in Charlottesville, Va. Her skeletal remains turned up three months later.
The PSA is meant to assist the FBI and Virginia State Police in gathering tips that could aid them in identifying a man whom they believe to be a suspect.
"Back in 2010, our band offered $50,000 to help catch the person responsible for murdering Morgan Harrington," says Hetfield. "Since that time authorities have uncovered new evidence linking her killer to a similar assault to a woman in Virginia."
The video included police sketches. Hetfield pleaded for anyone who may know the individual or have information on the case to contact authorities.
"Remember, any information, no matter how small you might think it is, could be that crucial piece investigators need to help solve the case," he said.
There is now a $150,000 reward, including Metallica's original $50,000.
Harrington, a 20-year-old aspiring teacher, was last seen hitchhiking after she left the John Paul Jones Arena where the group was playing that night.
Her body was discovered in January 2010. DNA recovered has since been linked to an unknown offender who attacked a woman in Fairfax City in 2005.
Anyone with tips can call the Virginia State Police at 434-352-3467.