The father of a missing 6-year-old boy with autism blamed himself for his son’s disappearance this weekend, as officials continue to canvas the surrounding area of a North Carolina park for any signs of the child. Maddox Ritch, 6, has been missing since Saturday and was last seen at Rankin Lake Park, about 20 miles west of Charlotte, with his father, Ian Ritch, and another adult who was not identified. Ritch told ABC's "Good Morning America" on Wednesday his son ran ahead of him and disappeared from his view.