Glen Bass, Glen Bass Investigations

Glen Bass Investigations is a full service private detective agency. GBI specializes in Technical Surveillance Countermeasures (TSCM), Rapid Environmental Contamination Sourcing, Corporate Social Responsibility (CSR) investigations and navigating gaslit legal engagements.



13533 Larkin Drive
Minnetonka, MN 55305

Business Phone


Mobile Phone



Business Hours

Monday - Saturday: 9:00 AM to 5:00 PM


Accident Investigations, Accident Reconstruction, Arson Investigations, Asset Checks, Background Investigations, Computer Crimes, Computer Crimes / Internet Security, Corporate Investigations, Covert Video, Document Examination, Hazardous Waste, Internet Security, Personal Injury, Public Interest Investigations, Skip Trace, Surveillance, Technical Survellance Countermeasures, Toxics, Undercover

Coverage Area

Minnesota Private Investigator License: PDI: 2110

Counties Covered: Anoka, Blue Earth, Carver, Dakota, Hennepin, Le Sueur, Martin, Nicollet, Ramsey, Scott, Sherburne, Stearns, Wright


Glen Bass Investigations has over 20 years experience in specialized Surveillance/Counter Surveillance, TSCM Bug Sweeps, Intellectual Property Theft and Environmental Contamination Investigations.

Glen is a veteran private investigator and has specialized in Surveillance, Counter-Surveillance, Technical Surveillance Counter-Measures (TSCM) and is certified as a Counter Terrorism Instructor, Counter Skyjacking Instructor, Pistol Fundamentals Instructor and in tactical medical response.

GBI's licensed investigators are experts in TSCM (Bug Sweeps), Background & Due Diligence, Asset Searches, Surveillance, Undercover Operations, and Corporate Espionage.

The team at GBI are seasoned professionals from a broad scope of disciplines. As a full service, licensed private detective agency our investigators are ready to take your case.

The GBI Countermeasures team is trained to the same specifications and employs the same techniques used by government agencies. We use state of the art equipment, the OSCOR by REI, a spectrum analyzer, as well as much much more.

We've completed hundreds of sweeps, briefed thousands of personnel and can come to your place of business, perform a vulnerability analysis, and professionally brief your employees, educating your staff about what to look for and how to respond.

Counter Surveillance Security Programs

Safe Room Service

We provide a Safe Room Service, where we come in just prior to your meeting, set up our equipment, both Spectrum Analyzers and Acoustic Noise Generators, conduct a preliminary bug sweep and stay to ensure no information is leaked or broadcasted.

Quarterly TSCM Sweeps

Continuing security and maintenance of your security position requires re-sweeping a location on unannounced regular intervals. Our process marks previously cleared outlets and electrical equipment which dramatically reduces the cost of follow up visits.

MAPI sponsors have opportunities to meet with our members at MAPI Events, and to provide materials and information to them about their business.

International Intelligence Network
Atlas Investigations
The National Council of Investigation and Security Services
Carney Forensics
Tracers Information Specialists, Inc.
PI Magazine
BRB Publications
IRB Search
El Dorado Insurance Agency, Inc.
Florida Association of Private Investigators, Inc.
Midwest Questioned Documents
Kelmar Global
Assured Polygraph LLC
National Investigative Training Academy, Inc. (NITA)
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ational Association of Legal Investigators