Two weeks after the mysterious disappearance of Virginia Tech University student Morgan Harrington, no clues or leads as to her whereabouts are known to exist — but members of METALLICA remain optimistic about the safe return of the young woman last seen at the band's October 17 concert."We are staying positive that she will be found soon," METALLICA lead guitarist Kirk Hammett told People.com at the Rock And Roll Hall of Fame concert in New York City Friday. "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," added Hammett, 46. "We empathize with that greatly, so we are doing what we can to help find her. We are staying positive." Read more from People.com. According to Roanoke.com, Harrington sustained a facial injury before she vanished from the concert in Charlottesville, Virginia State Police confirmed Friday. State police spokeswoman Corinne Geller said investigators didn't disclose the fact earlier because the injury was consistent with what a person would sustain after falling and doesn't appear to be related to her disappearance. "Many of those we've spoken to during the course of this investigation recalled seeing a minor scrape or cut on the face of the young woman they saw fitting Miss Harrington's description," Geller said. "This injury would be consistent with a slip or fall. In no way would such a minor abrasion be associated with an assault." Police decided to disclose the injury after reporters began inquiring about it.