The Police Department has 1 full time investigator. The investigator handles a variety of cases and the evidence associated with it.
The categories of crimes handled by the investigator along with some examples is provided below. 

Property crimes - burglary, theft, arson
Fraud - financial exploitation of vulnerable adults, embezzlement
Forgeries - business and personal
Violent Crimes - assault, sexual assault, child abuse, child sexual abuse, prostitution and sex trafficking
Waite Park Police Badge