A large volunteer search effort for Nancy Guthrie has been launched in Mexico after a group received an anonymous tip suggesting a possible burial site may have been located, according to a report. The search team conducted an initial sweep of the area identified in the tip, but Nancy was not found there. Despite the outcome, the team said they intend to continue their search efforts for Nancy and others who remain missing. Nancy, the mother of Savannah Guthrie, was believed to have been abducted from her home in Tucson, Arizona, in the early hours of February 1. #nancy #savannah #mexico #usa