A Pennsylvania teen pleaded not guilty to two counts of criminal homicide for the shooting deaths of his girlfriend’s parents – a case that sparked a national manhunt when he fled the state with the 14-year-old girl.

A 14-year-old girl whose 18-year-old boyfriend is accused of killing her parents left with him willingly after the shootings, prosecutors in Pennsylvania said in court papers.

Police seized 54 guns from the home of an 18-year-old accused of killing his girlfriend’s parents in the United States, it emerged tonight.