NEW CASTLE, Pa. —  An 11-year-old western Pennsylvania boy has pleaded not guilty to adult charges that he fatally shot his father's pregnant fiancee at their home Feb. 20.

Wednesday's formal arraignment for Jordan Brown was the first step in moving the case through Lawrence County Common Pleas Court. But Brown's defense attorneys say they still plan to ask a judge to move the case to juvenile court, where a judge would have jurisdiction over the case only until Brown is 21.

If he's convicted as an adult, Brown could face up to life in prison.

Brown is accused of shooting 26-year-old Kenzie Marie Houk as she lay in bed in their farmhouse in Wampum, killing her and her unborn son.