Anna Kepner: Florida teen cause of death revealed in court docs

New court documents revealed in the custody dispute between Anna Kepner's stepmom and her ex-husband confirm that the Titusville, Florida teenager died by asphyxiation, and that her body was found underneath the cruise ship bed. Court documents also reveal that Kepner's stepbrother is an apparent "suspect" in the FBI's investigation. The FBI, to date, has released few, if any, details on the case or investigation, citing agency policy.