Dallas (WBAP/KLIF) – DART has arrested a fourth suspect in connection with the July 30th assault of a customer at the Deep Ellum Station.  20 year old Cameron Hendrix was arrested late Thursday afternoon in Downtown Dallas.  Hendrix is the brother of two other suspects.  A total of four suspects are now in custody for the attack on Kennan Jones.  Police say Jones was beaten by at least seven people after he asked a group of teens to stop smoking weed on a southbound Green line train.  DART police believe there are up to three additional suspects in the case.  If you have any information, you should contact DART police at 214-928-6300.  Since the attack, DART has increased security and installed cameras on some trains.