HARTINGTON, Neb. (AP) — A Sept. 11 trial start has been scheduled for a South Dakota man and his father on charges stemming from the death of a 21-year-old woman after an all-terrain vehicle crash in northeast Nebraska.

Cedar County District Court records say 26-year-old Derrik Nelson pleaded not guilty Monday to vehicular homicide, manslaughter, and other charges. The June 29 crash last year near Fordyce killed Jessi Anderson, a South Dakota State University student.

The records say Nelson's 65-year-old father, J. Douglas Nelson, has pleaded not guilty to a misdemeanor accessory charge.

The records say Derrik Nelson was driving the ATV after consuming alcohol for several hours before the crash. Prosecutors say his father disassembled the ATV after the crash in an effort to hide evidence.

The two men live in Yankton, South Dakota.

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