History Professor Mary Kelly was a close friend. They were beloved teachers, each in their own way. They were happily married for over 30 years with two grown daughters. Officials had released very little information about the brutal stabbings. One of the things investigators did not reveal was an important piece of evidence.
Sources say an empty knife sheath was found at the murder scene.
New Hampshire investigators asked the company for sales and shipping records. Sources say investigators began checking records of sales closest to the scene of the murder and worked their way out. He paid for two knives, which were shipped to his home about 40 miles from the murder scene. They learned he was 16 years old and inseparable from his best friend, Robert Tulloch. After questioning both boys, investigators asked them if they would, along with their parents, come voluntarily here to the office of the Orange County Sheriff.