U.S. flag

An official website of the United States government, Department of Justice.

Dot gov

The .gov means it’s official.
Federal government websites always use a .gov or .mil domain. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

DNA (Deoxyribonucleic Acid)

Select Filters

Creating and Maintaining Sustainable Cold Case Units

As a matter of public safety and to ensure justice for victims, a priority of all law enforcement agencies – federal, state, and local – is to solve all cases, regardless of the amount of time that has passed.  

NIJ Journal: Archive of All Issues

The NIJ Journal features articles to help criminal justice policymakers and practitioners stay informed about new developments. The NIJ Journal presents research-based information that can help inform policy decisions and improve understanding of the criminal justice system.

Current Issue: No. 280, Law Enforcement and Policing

In this issue, our scientists and staff share some of the latest developments in policing and law enforcement.