Generally, a person convicted of a felony is sentenced within a standard range determined by the person's criminal history and the seriousness level of the crime. The person may be sentenced above the standard range, up to the statutory maximum for the crime, if "aggravating circumstances" are proven beyond reasonable doubt to a jury (or to the judge if a jury is waived). Examples of aggravating circumstances include when the defendant acted with deliberate cruelty to the victim, the victim was vulnerable or incapable of resistance, or the defendant exhibited an egregious lack of remorse.
It is an aggravating circumstance when, during the commission of the current offense, the defendant mutilated or dismembered a human body.