(AP) — A 22-year-old Iowa man has pleaded not guilty in the slaying of a Nebraska woman in South Sioux City.

Raymond Gonzalez Jr. on Monday entered the pleas to charges of murder, terroristic threats and disturbing the peace. He’s accused of shooting to death 28-year-old Bonnie Baker on Dec. 15. Investigators say Gonzalez had a dispute with Baker’s brother and had threatened him.

Twenty-five-year-old David Rodriguez, of Walthill, Neb., pleaded not guilty to being a prohibited person in possession of a firearm. Investigators have said Rodriguez and another man picked up Gonzalez shortly after the shooting.