CNN CNN Newsroom May 28, 2013 14:05:00
Of marijuana use by trayvon martin, the florida teen zimmerman is charged with killing. zimmerman's defense cannot use martin's toxicology report or mention his marijuana level at the time of his death. plus zimmerman's attorneys have been barred from using any evidence showing that martin is familiar with guns. he's supposed to go on trial for second-degree murder in two week and a pretrial hearing has been going on for an hour. victor blackwell is there at the trial. >> reporter: george zimmerman himself is not in court today. we contacted his team and said it was a last-minute decision. tha...