![The logo of the NPS Investigative Services Branch. The logo of the NPS Investigative Services Branch.](/orgs/1563/images/ISB_Logo_WallSeal_small.jpg?maxwidth=650&autorotate=false)
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](/common/uploads/grid_builder/1563/crop16_9/3F44A886-FF86-B205-2555875B0DCAB8A6.jpg?width=1300&quality=90&mode=crop)
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](/common/uploads/grid_builder/1563/crop16_9/43AEAC1C-DA0E-F0FC-8B1160B3D4240E30.jpeg?width=640&quality=90&mode=crop)
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](/common/uploads/grid_builder/1563/crop16_9/C9F90203-0500-884B-69183E8494ED37A5.jpeg?width=640&quality=90&mode=crop)
We conduct complex, sensitive, and/or long-term criminal investigations across the National Park System
![ISB Special Agents respond across the National Park System. NPS photo by ISB.](/common/uploads/grid_builder/1563/crop16_9/428300D5-1DD8-B71B-0B2D84BD547F5836.jpg?width=640&quality=90&mode=crop)
Get the latest case updates and other news from the NPS Investigative Services Branch
Last updated: May 23, 2022