Contact Us

The logo of the NPS Investigative Services Branch.
ISB: the Investigative Services Branch of the National Park Service.

NPS photo by the Investigative Services Branch.

NPS Investigative Services Branch
1849 C St NW Mailstop 2560
Washington, DC 20240
Phone: 202-379-4761
Email: nps_isb@nps.gov

Please explore our website for more information about us, including
advancing your investigative skills or pursuing a career with ISB. If you have additional questions, give us a call, send us an email, or join our social media community.

A special agent of the NPS Investigative Services Branch stands at a forested overlook above a river

Submit a Tip

See something suspicious? Stay safe and tell us about it. You don't have to tell us who you are, but please tell us what you know.

The investigative arm of the National Park Service

Who We Are

The investigative arm of the National Park Service (NPS), providing critical investigative & law enforcement support across all NPS sites

Find out more about the NPS Investigative Services Branch

What We Do

We investigate complex, sensitive, and/or long-term cases of all types of crimes

ISB Special Agents respond across the National Park System. NPS photo by ISB.

News and Updates

Get the latest case updates and other news from the NPS Investigative Services Branch

Last updated: March 2, 2022