What is the role of a person who provides information to police, often to receive leniency or compensation?

The role of a person who provides information to the police, often in exchange for leniency or compensation, is an informant. Informants typically have insider knowledge or are involved in criminal activities and assist law enforcement agencies in gathering intelligence about ongoing criminal operations. Their cooperation is often facilitated through promises of reduced sentences, monetary compensation, or other forms of benefits. This strategic partnership helps police in investigations and apprehending suspects.

In contrast, a witness generally provides testimony about events they have seen or heard, without the expectation of personal gain. A consultant refers to someone who offers expert advice in specific fields but is not directly involved in law enforcement or criminal activity. A defendant, on the other hand, is an individual formally accused of committing a crime and does not provide information in the same context as an informant. Hence, the identification of the role as an informant accurately reflects the nature of the relationship with law enforcement in this scenario.