Police Get Tip in Teen's 1989 Disappearance

Investigators think they may be on the verge of a breakthrough in a 23-year-old mystery. A team of 9-13 cadaver dogs will search a Massachusetts State Park on Saturday in search of the remains of Melanie Melanson, a local girl who went missing in 1989, just five days before her 15^th birthday. Police got an anonymous tip from a New Hampshire man telling them to search the park, a source tells Fox News.

Before the tip, Melanson's parents had been planning to dig up a patch of ground near some railroad tracks behind a local McDonald's, where dog teams had detected the scent of human decomposition, WBZ-TV reports. But the tipster told their private investigator that Melanie's body may have been moved to the park. Melanson disappeared after attending a party in the woods with her friends. "We don't believe she ran away," a DA spokesman said, adding, "We know who was with Melanie the night she disappeared." (More Melanie Melanson stories.)