OMAHA, Neb. (AP) – The murder trial for a Winnebago man accused of killing his fiancé last year on the Winnebago Indian Reservation in northeastern Nebraska has been postponed. 26-year-old Jonathan Rooney’s federal trial, which had been scheduled to begin May 10 in Omaha, has been pushed to Aug. 16. Rooney is charged in U.S. District Court with second-degree murder and tampering with documents in the killing of 22-year-old Kozee Decorah. Officers responding to a call for help from Decorah on May 16 found her burning remains in a fire outside a cabin near Winnebago. Rooney was found sleeping in the cabin with the couple’s 4-month-old son.