NEW : A young man , like his parents , is charged with murder and child abuse . USA : A school director calls the behavior ` ` subhuman , '' likely to ` ` long - term . '' A state investigator found no reason for violence in the household . Jorge Barahona earlier pleaded not guilty on charges of attempted first-degree murder with a weapon and aggravated child abuse with a weapon in the case . A 10-year - old girl was found dead in plastic bag , her twin brother was burned .
NEW : A young man , like his parents , is charged with murder and child abuse . USA : A school director calls the behavior ` ` subhuman , '' likely to ` ` long - term . '' A state investigator found no reason for violence in the household . A 10-year - old girl was found dead in plastic bag , her twin brother was burned .