Investigators are continuing to pore through the extensive library of YouTube videos created by Frank James, the 62-year-old man accused of shooting 10 people on a New York City subway train, searching for clues about his motive. edition.cnn.com

Investigators are continuing to pore through the extensive library of YouTube videos created by Frank James, the 62-year-old man accused of shooting 10 people on a New York City subway train, searching for clues about his motive.