MIKE DUKE
LICENSED PRIVATE INVESTIGATOR
With 34 years of service in West Michigan law enforcement, he brings deep investigative experience, tactical discipline, and a commitment to the truth to every case he takes on. He served with the Zeeland, Sparta and Grand Rapids Police Departments across multiple roles—patrol officer, Field Training Officer (FTO), SWAT team member, and detective—giving him a 360-degree view of how cases unfold, how evidence stands up, and what it takes to get results.
After retiring from the force, he founded Duke’s PI Services to continue serving the community he knows and cares about. What sets his approach apart is a blend of street-level insight and investigative rigor: methodical planning, disciplined fieldwork, and clear, evidence-based reporting. He works closely with individuals, families, businesses, and attorneys throughout the Grand Rapids area to uncover facts with care, discretion, and integrity.
Comprehensive Law Enforcement Background
Mike’s diverse police career spans multiple specialized units and roles:
Patrol Operations: Years of frontline police work provided Mike with essential skills in observation, report writing, evidence collection, and community interaction that form the foundation of effective private investigation.
Field Training Officer: As an FTO, Mike developed exceptional mentoring abilities and refined his knowledge of proper investigative procedures, ensuring all work meets the highest professional standards.
SWAT Team Member: Specialized tactical training enhanced Mike’s ability to handle high- pressure situations with precision and sound judgment.
Detective Unit: Investigative experience in the detective division honed Mike’s skills in case development, witness interviews, evidence analysis, and complex problem-solving.