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.

Year-round and around the clock, we stand ready to support all sites across the National Park System. ISB Special Agents also serve on multi-agency task forces and regularly collaborate with investigators of other agencies.

For more information about ISB, or if you're interested in advancing your investigative skills or pursuing a career with ISB, call 202-379-4761 or email us.

NPS Investigative Services Branch
1849 C St NW Mailstop 2555
Washington, DC 20240
Phone: 202-379-4761

Learn and Explore

Submit a Tip

Aid an investigation or report something suspicious in any National Park Service Site.


A park biologist stands next to a massive coastal redwood tree damaged by burl poachers.

Report crimes in national parks

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.

Cold cases include missing persons and unsolved incidents. NPS image.

Cold Cases

Cold cases include missing persons and unsolved incidents - do you have information that could help investigators?

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

Case Updates and News from ISB

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

Find out more about us in our recap of significant cases and operations.

Annual Reports

We are pleased to share our annual recaps of significant cases, operations, and other noteworthy events that happened throughout the year

You are not alone, and support is available - find out more here.

Victim and Witness Assistance

You are not alone, support is available, and you have rights - find out more here.

ISB: the Investigative Services Branch of the National Park Service
Who We Are | What We Do | News | Submit a Tip

Last updated: June 8, 2020