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Certification Unit

The Certification Unit is responsible for licensing private detectives and Watch, Guard, or Patrol agencies, appointing Special State Police, and conducting various background investigations for police-related agencies.

We conduct 8 different types of background investigations for: recruit training candidates, Department of State Police civilian employees, private detectives, Watch Guard Patrol Agencies, Special State Police, Department of State Police interns, temporary employees, and in-state and out-of-state backgrounds requested from outside agencies.

Contact Information


485 Maple Street, Danvers, MA 01923


(978) 538-6021

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