RUTLAND, Vt. (AP) — The son of a Vermont town official accused of killing his father, stepmother and stepbrother pleaded not guilty Thursday and was ordered held without bail Thursday during his first court appearance in Vermont.A defense attorney entered the pleas of not guilty to three counts of aggravated murder on behalf of Brian Crossman Jr., 23, of Granville, New York, who waived extradition from his home state, where he was arrested. He will be jailed until a Vermont judge holds another hearing on whether he should be detained through trial.