A teenage girl involved in a traffic collision that left Metro Nashville Police Department officer John Anderson dead pleaded guilty to four criminal charges in a court proceeding on Thursday.

According to The Tennessean, the driver of the vehicle that struck the patrol car driven by Officer Anderson—identified in court documents as 17-year-old Jayona Brown—sped through a blinking red light at the same time Anderson entered the intersection while other vehicles pursued the suspect vehicle following a traffic stop.

On Thursday, Brown—now 18 years of age—pleaded guilty to vehicular homicide and felony aggravated assault related to injuries sustained by the passenger in the car she was driving.

Officer Anderson was a U.S Marine Corps Reserve veteran and had served with the Metro Nashville Police Department for four years.