PIERRE, S.D. — A Wanblee man accused of assaulting a federal police officer has pleaded not guilty in U.S. District Court.

Forty-seven-year-old Shawn Ashley is accused of assaulting an on-duty Oglala Sioux officer on the Pine Ridge Indian Reservation in June.

U.S. Attorney Randolph Seiler says Ashley pleaded not guilty late last month to assault on a federal officer. The charge carries a maximum punishment of eight years in prison.