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Correspondence about an open case is conducted by the assigned investigator only. This office does not take reports by telephone.
Last updated: 09/14/2026
Home » About the Unit

About the Unit

Case review room
Case review room, regional field office.

The Major Case Unit was formed under memoranda of understanding between participating county and municipal law enforcement agencies to pool investigative resources on major cases. The Unit operates with sworn investigators detailed from partner agencies and a small civilian support staff (analysts, records, digital evidence).

The Unit has no patrol function and does not take reports from the public. Its investigators work at the request of the agency of jurisdiction and under the direction of that agency's command and the county prosecutor.

Jurisdiction

  • County support: assistance to sheriff's offices on request of the sheriff or the county prosecutor.
  • Municipal support: assistance to city and township police departments on request of the chief of police.
  • Multi-county cases: coordination when an offense, a suspect or a victim crosses county lines.

Field offices

Investigators are assigned to a field office located within the partner agency they support. Field office locations are not published. Correspondence about a case is conducted by the assigned investigator, in writing, from a majorcaseunit.org address.

Organization

SectionFunction
InvestigationsHomicide, missing persons, serial offenses, assistance to partner agencies
Digital EvidenceDevices, accounts, network records, imagery
AnalysisCase linkage, timelines, records research
RecordsCase files, public records requests, retention

Reports