Woburn, Mass. - A new search is on for the remains of a teenage girl who's been missing for more than 20 years. Private searchers looked at a small patch of woods in Woburn on Friday for clues to the disappearance of Melanie Melanson, who was 14 when she vanished in 1989 after attending a party in the woods. They plan to resume today. Mike Garrigan, a private investigator, said evidence over the past year has led them to believe Melanie's remains are in the area. The evidence includes tips, soil tests that came back positive for human decomposition, and positive responses from cadaver sniffing dogs. No one has ever been charged in the case. The search is private, and although police have been on hand to observe, no law enforcement agency is involved.