We are licensed to conduct private investigations in Minnesota, New York, Illinois, North Dakota & South Dakota.  We work with a network of attorneys and retired FBI Agents to provide national and international services.  Our emphasis continues to be investigations relating to financial malfeasance, fraud, and employee misconduct.

Frank W. Gasper

Licensed Private Investigator

Frank Gasper is the founder and Principal of Gasper Investigations, LLC, a private investigation firm based in New York, Minnesota, Illinois and North Dakota.  The firm partners with former FBI Agents throughout the entire United States.  Gasper Investigations specializes in financial investigations, fraud and employee malfeasance. 

Frank is the recipient of the 2019 US Attorney General Award for Fraud Prevention, the 2018 US Attorney for North Dakota Victims Assistance Award and was named a 2016 Bismarck Tribune Person of the Year.

Minnesota License #2321

New York Department of State License #11000221129

Illinois License #115002658

North Dakota License #588

Member of New York Bar

What We Do

Gasper Investigations works with attorneys to prepare and engage in complex litigation; clients include corporations and banks addressing fraud, employee malfeasance and background reviews.


The services are grounded in our experience at the FBI where we developed information from public records and resources, non-public records, and personal interviews.  We are highly skilled at conducting comprehensive research, reviewing large amounts of financial records, identifying, locating, and interviewing witnesses; and gathering admissible documentary evidence. 


Our purpose is to deliver ethical, comprehensive and effective services for our clients.


547 S. 7th Street, #107

Bismarck, ND 58504

150 Scudders Lane

Roslyn, NY 11576