Sentences for first degree murder convictions vary according to jurisdiction, as well as aggravating and mitigating factors. First degree murder is legally defined as the unlawful killing of a human being with premeditated and deliberate intent. A first degree murder conviction is based on several aggravating factors used to determine the severity of the crime. Aggravated murder factors include: premeditation; murder of a police or court officer, or crime witness. The murder of a pregnant woman or a child under the age of 12 is considered, as well as murder for financial gain; and extreme brutality or torture. Following conviction, a sentencing hearing is held, allowing the victim's family to present witness impact statements. The court will consider the defendant's age and prior criminal