MICHAEL DUIGNAN
CHICAGO,IL
Summary
Detective with long-running law enforcement experience conducting criminal investigations, managing surveillance, and documenting facts from 5+ witness interviews per week in court-ready case files. Builds 3+ warrants or subpoenas per month, search warrants, subpoenas, affidavits, and detailed reports from witness interviews, suspect statements, and physical surveillance. Supports criminal case resolution through evidence collection, testimony, and clear timeline reconstruction.
Overview
4
4
Certifications
27
27
years of professional experience
Work History
Detective
Chicago Police Department
06.1999 - Current
- Manage [number] case files per shift while maintaining accurate reports and complete case documentation.
- Conduct surveillance of individuals, properties, and events to support active criminal investigations.
- Interview suspects, witnesses, complainants, and accused persons to obtain statements and clarify case facts.
- Execute and obtain search warrants and subpoenas to collect evidence for criminal case resolution.
- Prepare criminal cases for court and present testimony that supports evidence and case timelines.
- Record facts from investigations and coordinate case development across suspects, witnesses, and evidence sources.
Safety and Security Officer
City Colleges Of Chicago
05.2009 - 05.2016
- Completed [number] security patrols per shift across campus buildings while maintaining strong visibility and quick response.
- Monitored surveillance equipment to identify suspicious activity and reported incidents promptly to law enforcement.
- Investigated accidents and other safety-related issues by collecting evidence and documenting findings for review.
- Performed computer checks and prepared incident reports to support safety reviews and case follow-up.
Safety and Security Officer
City Of Chicago-Chicago Public Schools
09.2000 - 05.2009
- Patrol school premises to identify hazards, address safety risks, and maintain a visible security presence.
- Observe surveillance equipment for suspicious activity and report concerns to law enforcement as needed.
- Assist with accident reviews and other safety-related investigations to clarify facts and support follow-up action.
- Coordinate safety responses with law enforcement when incidents require outside support or additional review.
- Gather observations from patrols and incidents to strengthen school safety documentation and follow-up.
Education
Bachelor of Science - Business Administration
North Park University
Chicago, IL06-1992
Skills
- Report preparation
- Evidence collection
- Witness interviews
- Search warrant service
- Criminal investigation coordination
- Computer checks
- Surveillance monitoring
- Affidavit preparation
- Incident report writing
- Court testimony
Certification
Osha 30 certified
Timeline
Safety and Security Officer
City Colleges Of Chicago
05.2009 - 05.2016
Safety and Security Officer
City Of Chicago-Chicago Public Schools
09.2000 - 05.2009
Detective
Chicago Police Department
06.1999 - Current
Bachelor of Science - Business Administration
North Park University