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