A man who’s in prison for identity theft and violating probation is now charged in the drug overdose death of a man from Superior last Thanksgiving. Douglas County prosecutors filed a reckless homicide charge Tuesday against 22-year-old Nathan Birkholz of Superior. He allegedly provided a mix of heroin and fentanyl that killed 25-year-old Neil Christianson who was found dead in his Superior home last November 25th. Investigators said Birkholz arranged several drug sales the night before which resulted in Christianson’s death. Birkholz started a nine year prison term at Waupun in June, for violating a probation connected with a string of burglaries and identity theft. An initial court date has not been set for the drug death.