Trial proceedings for a man facing 22 charges related to a 2018 road rage incident in which he allegedly shot four people, killing 13-year-old Vaughn Bigelow Jr., are set to begin Wednesday in Adams County District Court.

Jeremy Webster is accused of following the four family members into the parking lot of a dentist’s office at West 80th Avenue and Sheridan Boulevard in Westminster on June 14, 2018, and opening fire on the family with a handgun. He allegedly was angry Megan Bigelow had tried to change lanes to pull over for an emergency vehicle.

A spokesperson for the 17th Judicial District Attorney's Office said Wednesday the court is handling procedural matters for the trial and jury selection is expected to begin Thursday morning. Opening arguments are expected Friday morning, dependent on jury selection. 

Denver Gazette news partner 9News previously reported that Webster admitted to the attack, saying he had mental health problems and had changed medication the day of the shooting. A psychiatrist said Webster has been diagnosed with bipolar disorder and prescribed anti-depressant and anti-psychotic medications, according to 9News.

Vaughn Bigelow Jr. died. Webster also allegedly shot Meghan Bigelow, her younger son Asa, and another man, John Gale, news outlets reported at the tiem. Meghan Bigelow’s middle son Cooper was unharmed. Authorities arrested Webster on Interstate 25 near Castle Rock a few hours after the shooting.

Webster is charged with:

  • One count of first-degree murder after deliberation
  • Four counts of attempted first-degree murder after deliberation
  • Two counts of first-degree murder with extreme indifference
  • Three counts of first-degree assault causing serious bodily injury with a deadly weapon
  • One count of first-degree assault with extreme indifference
  • One count of attempted first-degree assault with extreme indifference
  • Four counts of committing a violent crime causing death or serious bodily injury
  • Six counts of committing a violent crime using a weapon

He pleaded not guilty by reason of insanity. The trial was delayed several times because of questions about his mental health and the COVID-19 pandemic.