8.110 Manslaughter-Involuntary (18 U.S.C. Sec. 1112) is a criminal offense that is defined as the unlawful killing of another human being without malice or premeditation. This type of manslaughter is considered to be unintentional or careless and is punishable by imprisonment for up to eight years. There are two types of 8.110 Manslaughter-Involuntary (18 U.S.C. Sec. 1112): 1. Involuntary manslaughter under the “heat of passion” doctrine: This doctrine recognizes that a defendant may have acted impulsively and without malice in a situation that causes the death of another. 2. Involuntary manslaughter based on criminal negligence: This type of manslaughter occurs when a defendant’s carelessness or recklessness results in the death of another person.