What is the main purpose of a lineup in criminal investigations?

The primary purpose of a lineup in criminal investigations is to allow witnesses to identify a suspect. A lineup provides a controlled environment in which witnesses can view multiple individuals, including one or more potential suspects, to determine if they can recognize the person involved in the crime. This process is critical because it helps ensure that any identification made by the witness is based on their observation rather than external influences.

By conducting a lineup, law enforcement agencies aim to strengthen the integrity of the investigation and bolster evidence that may be used in court. Ensuring that the identification process is fair and unbiased further protects the rights of individuals involved, as wrongful identifications can lead to significant legal repercussions and affect the administration of justice. The lineup serves as an essential tool in gathering reliable evidence and involving eyewitness testimony in the pursuit of legal accountability.