The Investigative Arm of the National Park Service
The special agents of the National Park Service Investigative Services Branch (ISB) are a specialized and highly trained team of criminal investigators. They work year-round and around the clock to investigate complex, sensitive, and long-term cases of all types of crimes. ISB special agents are stationed across America's more than 420 national parks and report directly to NPS headquarters in Washington, D.C.
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.
During National Police Week and throughout the year, we remember, celebrate, and honor those officers who have died in the line of duty.
We investigate complex, sensitive, and/or long-term cases of all types of crimes
Get the latest case updates and other news from the NPS Investigative Services Branch
Cold cases include missing persons and unsolved incidents - do you have information that could help investigators?
Last updated: May 10, 2022