Police: Teen suffocates little girl before slashing her neck and torso; suspect suffered from ‘psychosis’ and thought humans were robots

A 16-year-old teen pleaded guilty to manslaughter on Monday and admitted she killed a 7-year-old girl by suffocating her and slashing her with a knife. BBC News reports that the suspect, whose name is disclosed because of her age, is accused of killing Katie Rough. Katie and the suspect were both in a field in York, …