article_snippet.sent: The cause of the accident was under investigation. '
article_snippet.sent: We don't know at this time whether it was an accident or an intentional event,' Humphrey said.
article_snippet.sent: ABC reports that the event that led up the incident remain unknown.
highlights_snippet.sent: Police are investigating whether the crash was intentional .
  
highlights_snippet.sent: The victims have not been identified .
  