Testimony of a witness under grant of immunity or reduced criminal liability is a type of evidence presented in a court of law. It is a statement made by a witness who has been granted legal immunity or reduced criminal liability in exchange for providing information related to a particular crime or legal matter. The testimony is usually given voluntarily and without a promise of reward or leniency in return. The witness is typically not at risk of being charged with criminal activity or held liable for civil damages as a result of providing the testimony. There are two different types of testimony of a witness under grant of immunity or reduced criminal liability. The first type is immunity from prosecution. This type of immunity means that the witness is immune from any criminal prosecution as a result of providing the testimony. The second type of testimony is reduced criminal liability. This type of testimony means that the witness is not immune from criminal prosecution, but any potential criminal charges may be reduced or eliminated depending on the information provided.