Lamar County District Attorney Gary Young says the change of venue motion was filed in connection with the Ashley Morrison murder trial because too many potential jurors knew about the case or knew family members of those allegedly involved. Morrison is accused of killing Sims’ grandmother Annie Sims in 2014. Christian Sims pleaded guilty last year to 35 years in prison. Sources say the trial will likely be moved to either Rockwall or Grayson county.