Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest and crime counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. Every office link was opened and checked against the office's own site between September 23, 2026 and October 2, 2026.
Thief River Falls, Minnesota, in Pennington County, has about 8,800 residents (2024 Census Bureau estimate). A police report belongs to the agency whose officer wrote it, so which office holds a report from Thief River Falls depends on where the incident happened. This guide names each agency, where its records page is and what the Minnesota Government Data Practices Act requires of it.
This guide covers which agency, the city's records page, the sheriff's reports, what the law requires and common questions.
Related guides: Thief River Falls public records, Pennington County police reports, Thief River Falls arrest records, Thief River Falls warrants, Thief River Falls inmate search, Thief River Falls criminal records, Minnesota arrest records and Minnesota inmate search.
Which Agency Holds a Report from Thief River Falls
The report of an incident is released by the agency that took it; the court and the jail hold their own records of the same event, but not the report.
Inside Thief River Falls that is the agency that reports to the FBI for the city (filed by the FBI as Thief River Falls Police Department); outside it, the Pennington County Sheriff's Office.
The FBI's list also places the State Patrol at Thief River Falls in Pennington County; a report taken on a state highway by it comes from that agency's own records office.
Reports from the Thief River Falls Police
For Thief River Falls, SearchSystems opened and checked the Thief River Falls police department's page at trfmn.gov/179/Police (page title: Police | Thief River Falls, MN), phone 218-681-6161, 102 First Street West Thief River Falls, MN 56701, which answered when SearchSystems opened it on September 26, 2026.
The agency that reports for Thief River Falls had 19 violent and 76 property crimes reported for 2025 and reported 138 arrests for 2025.
Reports from the Pennington County Sheriff's Office
The Pennington County Sheriff's Office is the county agency; it had 3 violent and 14 property crimes reported for 2025 and reported 33 arrests for 2025.
Its reports come from its records unit. The office's page SearchSystems verified is its custody page, at incustodysearch.penningtonsheriff.org/ResponsiveInCustody.aspx (page title: In-Custody Search | Pennington County Sheriff's Office), which answered when SearchSystems opened it on September 23, 2026.
What the Minnesota Government Data Practices Act Requires
The Minnesota Government Data Practices Act sets the rules: an answer promptly, within a reasonable time, at a charge of copying, and staff time for requests over 100 pages, from the agency that holds the report.
Any other county record goes through the county records request page SearchSystems verified, at penningtonsheriff.org/index.php/etiam-suscipit (page title: Records Request).
A defendant who has been charged gets the report through the case: the County Attorney, 218-683-7000, handles discovery for pending cases.
Frequently Asked Questions
How do I get a police report in Thief River Falls?
From the agency that took it. The Thief River Falls police department's page is at trfmn.gov/179/Police, phone 218-681-6161; the sheriff's reports come from the Pennington County Sheriff's Office.
How long does an agency in Thief River Falls have to answer?
Under the Minnesota Government Data Practices Act, promptly, within a reasonable time. It may charge copying, and staff time for requests over 100 pages.
Who has a crash report from a state highway in Thief River Falls?
The state agency whose officer took it; the FBI lists the State Patrol at Thief River Falls in Pennington County.
How do I get a report from the Pennington County Sheriff's Office?
From its records unit. Under the Minnesota Government Data Practices Act the answer is due promptly, within a reasonable time.
Is this the official Thief River Falls website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.