KANSAS CITY, MO- An accused killer in Missouri has pleaded not guilty to federal fraud charges in his dealings with two Wisconsin brothers. Garland Nelson also faces murder charges in state court.  Local prosecutors say he killed Nick and Justin Diemel of Shawano County in 2019 and tried to hide their bodies.  During his Tuesday federal court appearance, he was responding to charges he defrauded the Diemel brothers before killing them.  His federal trial is set to start in September.  The murder case goes to trial the following February.