8.109 Manslaughter-Voluntary (18 U.S.C. Sec. 1112) is a type of homicide crime that occurs when a person kills another without malice aforethought. This is also commonly known as voluntary manslaughter, and it is typically classified as a felony in the United States. It is distinguished from other types of homicide, such as involuntary manslaughter, which is an unintentional killing, and first-degree murder, which is a premeditated act. There are two types of 8.109 Manslaughter-Voluntary (18 U.S.C. Sec. 1112): heat of passion voluntary manslaughter and imperfect self-defense voluntary manslaughter. Heat of passion voluntary manslaughter occurs when a person kills another in the heat of the moment after being provoked. Imperfect self-defense voluntary manslaughter occurs when a person kills another in self-defense, but their belief that they were in danger was unreasonable.