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Investigative Services Group
The Investigative Services Group is divided into two major bureaus--Criminal Investigations and Special Investigations.  Deputy Chief David Graham oversees this service group as well as the International Relations Unit.

Criminal Investigations
This bureau, headed by Major Harold Medlock, deals with homicides, missing persons, property crime, robbery, sexual assaults and family services.

Special Investigations
This group, headed by Major Rick Williams, deals with intelligence gathering, organized crime, vice and narcotics, violent crime, and gangs.
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International Relations Unit