TUCSON, Ariz. (AP) -- A University of Arizona police sergeant charged in February with super-extreme DUI no longer works for the school. A UofA spokeswoman says July 1 was John McGrath's last day of employment. The 27-year-old McGrath had been on investigative suspension. He was arrested Feb. 1 after crashing a police department SUV into a traffic sign while on duty. Police say McGrath was driving the marked vehicle when he hit a sign and a concrete wall on an Interstate 10 frontage road. Officers investigating the crash conducted a DUI investigation and police say McGrath's blood-alcohol content was .20 percent or greater. He was charged with super-extreme DUI, three lesser DUI charges, failure to control speed to avoid a collision and criminal damage. McGrath had worked for the UA Police Department since 2009.