Today makes it a month since Metallica fan Morgan Harrington went missing from the band's Oct. 17 concert in Charlottesville, Va. But the search for clues and information that could lead police to the missing 20-year-old Virginia Tech student continues, with the call center at the National Center for Missing and Exploited Children getting involved.

The NCMEC will be fielding calls and taking any information about Harrington's case. Center workers will ask callers specifics about the case, particularly whether they know if anyone gave Harrington a ride home from the event or loaned her a cell phone to make a call that night. Police revealed last week that it appears Harrington may have tried to use other concertgoers' phone to contact friends inside the venue, after she ended up outside, and that Morgan was last seen hitchhiking.

"We're giving any hope for Morgan," says NCMEC Executive Director Bob Lowery. "We're going to pursue this case like Morgan is still alive and she's safe and we're not going to give up until we find out otherwise."

Harrington attended the concert with friends, but separated from them to use the bathroom. Afterwards, she ended up outside the venue, which has a no re-entry policy. Exhaustive air and ground searches have yielded little in the way of hard clues, but foul play is suspected.

On Monday, Harrington's parents told the media that, in addition to a Pantera T-shirt, black boots and a black mini-skirt. Morgan was also wearing a distinctive crystal necklace with a link motif at the time she vanished. Her cell phone and purse were recovered from a parking lot nearby.

Two weeks ago, Metallica's Kirk Hammett spoke about Harrington's case. "We are staying positive that she will be found soon," he said. "We are all hoping for the best and praying for her and her family. We all have children and as parents ourselves, it's our worst nightmare for a child to go out and not come back home. We empathize with that greatly, so we are doing what we can to help find her. We are staying positive."

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