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Mark Edgar Koster Homicide — SOLVED Mark Edgar Koster 58 YOA 610 N. 5th St. Sac City, Iowa Sac County Went Missing: July 4, 2009 Declared Legally Dead: October 10, 2011 Remains Found: November 5, 2012 LATEST UPDATES Green sentenced to 50 years SAC CITY – John David Green was sentenced […]