Unlicensed security guard accused in deadly shooting waives preliminary hearing Matthew Dolloff, 30, was supposed to appear in court for the hearing on Friday. The next step is now an arraignment. Author: Allison Sylte Updated: 12:24 PM MST January 6, 2021 DENVER — The unlicensed security guard charged with second-degree murder following a deadly shooting at dueling Denver rallies has waived his right to a preliminary hearing, according to the Denver District Attorney’s Office. Matthew Dolloff, 30, is no longer in custody after posting a $500,000 bond. The next step in the legal process for him is an arraignment, and a date for that proceeding could be set on Friday.