Police seek to establish timeline after boy, 9, left alone on school bus in BlackwoodPolice are going through surveillance video to establish a timeline as they try to figure out how a 9-year-old boy was left alone on a school bus in Blackwood, New Jersey. Police are going through surveillance video to establish a timeline as they try to figure out how a 9-year-old boy was left alone on a school bus in Blackwood, New Jersey. Police are going through surveillance video to establish a timeline as they try to figure out how a 9-year-old boy was left alone on a school bus in Blackwood, New Jersey. Police are going through surveillance video to establish a timeline as they try to figure out how a 9-year-old boy was left alone on a school bus in Blackwood, New Jersey. RELATED: Parent says 9-year-old left asleep on school bus, found wandering district bus yard in South JerseyA South Jersey mother says her 9-year-old son woke up alone in a bus yard after falling asleep on the school bus on Thursday.