A preliminary hearing is underway for Tyler Robinson, 23, who is charged with aggravated murder. The hearing, which has been ongoing for a week, involves arguments over evidence to be admitted in court. Defense attorneys and prosecutors have been debating the admissibility of videotaped interviews, texts, and other messages.

The defense has also questioned the reliability of DNA testing that allegedly links Robinson to the suspected murder weapon. Further details on the case are available from KSAT 12. The hearing is expected to conclude soon, after which a state District Judge will determine if the case should proceed to trial.