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.
US Park Rangers and NPS Dispatch and Communications Center staff may link to the ISB Duty Agent line here.
NPS Investigative Services Branch
1849 C St NW Mailstop 2555
Washington, DC 20240
Case Updates and News from ISB
Get the latest case updates and other news from the NPS Investigative Services Branch
We are pleased to share our annual recaps of significant cases, operations, and other noteworthy events that happened throughout the year
Victim and Witness Assistance
You are not alone, support is available, and you have rights - find out more here.
Last updated: April 14, 2019