A school bus drives past the home of Nancy Lanza at 36 Yogananda St. in Sandy Hook, the mother of Adam Lanza, who also lived there. The house is surrounded by police crime tape and has a police presence in the driveway and the street. State police detectives have been combing the 4,000 square-foot house since moments after the gunfire stopped inside the school trying to find clues as to why Adam Lanza shot his mother and then went on to kill 26 others.