IOWA CITY – Officials with the Iowa Department of Corrections said Friday, prison inmate, 59-year old Delbert Duane Anderson, was pronounced dead due to natural causes Friday afternoon, at the University of Iowa Hospitals and Clinics. Anderson had been serving a 30-year maximum term for the crimes of Burglary 1st Degree and Willful Injury Causing Bodily Injury from Johnson County. His incarceration began on December 29, 2006.