What is the main purpose of a photo array in criminal investigations?

The main purpose of a photo array in criminal investigations is to identify suspects. A photo array is a tool used by law enforcement to help witnesses or victims recognize an individual who may have been involved in a crime. This technique typically involves presenting a group of photographs, which includes a suspect's picture alongside others, to a witness.

The goal is to elicit a reliable identification while minimizing the risk of misidentification. This process is critical in ensuring that the right person is apprehended and that justice is served. Although gathering evidence, collecting witness statements, and securing convictions are all important elements of the investigative process, the identification of suspects through a photo array is specifically focused on linking a potential perpetrator to a crime based on witness recognition. Thus, it plays a pivotal role in building a case for further investigation or prosecution.