The Greer Police Department’s Criminal Investigation Division (CID) is dedicated to investigating crimes in the City of Greer. The division's primary role is to conduct thorough follow-up investigations, identify suspects, and assist in the prosecution of criminal offenders. CID includes a team of professionals, including detectives, a project safe neighborhood investigator, victim advocates, and support staff, all working together to maintain public safety.

CID investigators specialize in various areas, including violent crimes, juvenile offenses, and narcotics and vice operations. They are trained in forensics, crime scene processing, and evidence collection, ensuring thorough investigations.

In Greer, the Project Safe Neighborhoods (PSN) initiative plays a crucial role in reducing gun and gang violence through a comprehensive approach. The nationwide program focuses on tackling violent crime by uniting local law enforcement with federal, state, and tribal agencies, as well as community leaders. Greer's PSN strategy emphasizes community engagement, prevention, and strategic enforcement to improve safety and address the most pressing crime issues in the area.

The initiative follows a research-driven approach, using data and lessons learned from other crime reduction efforts to shape effective strategies. With a focus on fostering trust, supporting community organizations, and setting clear enforcement priorities, Greer's participation in PSN helps create safer neighborhoods by reducing violent crime and building stronger, more resilient communities.

The Vice & Narcotics Team focuses on addressing crimes related to illegal drugs, prostitution, gambling, and alcohol violations. The team dedicates most of its efforts to Patrol-Based Initiatives, which involve targeted enforcement of identified issues within the community. By specializing in narcotics and vice operations, the team works to reduce criminal activity and enhance public safety.