SAC CITY, Iowa (AP) – A Georgia man has pleaded not guilty to first-degree murder in the death of his former roommate in Iowa.  The Fort Dodge Messenger reports 54-year-old John Green, of Blairsville, Ga., made the written plea Thursday. Online records do not list a scheduled trial date.    Green is accused of killing 58-year-old Mark Koster, of Sac City. Koster’s skeletal remains were found buried in the basement of his house in 2012.

Police say Green briefly lived with Koster in 2009. Relatives say they last saw Koster that year, and he was reported missing in 2010.  Green was arrested in Florida in March. He is being held at the Sac County Jail without bond.