COVID-19 NOTE: Due to events surrounding COVID-19 State of Emergency, the State Police are not currently processing new or renewal applications for concealed handgun permits, professional investigator or contract security licenses. We understand this is an important public service for Maine residents and non-residents alike and it is our intent to continue this service as soon as our capacity and resources allow. However, if you submit or have submitted a timely application for a license or a permit during this time period (i.e. the application is not expired when we receive it) the license and permit remains in effect pursuant to 5 MRS §10002. If you have a concealed handgun permit from an issuing authority other than the Maine State Police you need to check with them for advice and guidance.
The Special Investigations Unit provides licensing for professional investigators, investigative assistants, and professional security companies.
List of of Licensed Professional Investigators by the Maine State Police:
- Licensed Professional Investigators (PDF)
- Click here to file a complaint on a professional investigator or investigative assistant.
Contract Security:
Forms / Handbook:
- Private Security Guards Handbook
- Licensed Contract Security Companies
- Cover Letter - Contract Security - New Application
- Cover Letter - Contract Security - Renewal
- Contract Security Company Application
- Form P3-E - Contract Security
- Authorization to Release - Contract Security
- Form 577 - Contract Security
- Addendum B
- Surety Bond
Professional Investigator:
Forms / Handbook:
- Professional Investigator Handbook
- Cover Letter - Professional Investigator - New Application
- Cover Letter - Professional Investigator - Renewal
- Professional Investigator Application - New
- Professional Investigator Application - Renewal
- Form P-3E - Professional Investigator
- Authorization to Release - Professional Investigator
- Form 577 - Professional Investigator
- Surety Bond
- Professional Investigator Change of Address / Duplicate Permit
Investigative Assistant:
Forms / Handbook:
- Professional Investigator Handbook
- Cover Letter for Investigative Assistant
- Investigative Assistant Application
- Form P-3E
- Authorization to Release
- Form 577
- Sponsor Letter
- License Expiration Notification Letter
- Proof of Hours Letter
- Surety Bond
- Training Log
- Investigative Assistant Change of Address / Duplicate Permit