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Photo Credit: Matt Ervin
Photo Credit: Rita Kelp
Photo Credit: Rita Kelp
Photo Credit: Rita Kelp
Photo Credit: Rita Kelp



 Interviewing victim(s), witnesses, and potential suspect(s)

 Crime scene photography  Crime scene documentation

 Latent print development, examination, and identification

 Footwear impression development, examination, and identification

 Tire impression development, examination, and identification

 Blood pattern analysis

 Collection and preservation of DNA evidence

 Composite drawings

 Mapping and plotting crime and crash scenes

 Collection and forensic examination of digital evidence

 The reconstruction of serious injury and fatal traffic crashes

 Crime scene reconstruction (including if weapon was involved)

 Maintaining the property and evidence room

 Civil forfeiture (drug forfeiture and general forfeiture)

 Surveillance/Intelligence

 Provide court testimony (on occasion-testify as expert witnesses)




Lieutenant Gary Parks          810-245-1382   

D/Sgt. Chad Polmanteer        810-245-1335  

D/Sgt. Jason Parks                810-245-1381   

D/Sgt. Robert Wells                 810-245-1368 

Tip Line: 810-245-1374  


 The Lapeer County Sheriff’s Detective Bureau provides investigative and forensic support. Detectives possess special areas of skills, training, and expertise to enhance investigations. Patrol division deputies are unable to devote the required time and resources to complex and detailed investigations due to their responsibility of responding to 911 calls. The Detective Bureau is a vital support service. Detectives conduct in-depth investigations on reported crimes. In addition, they compile criminal intelligence to determine pattern (aids in identifying an offender and crime prevention). Detectives are also trained crime scene technicians. Detectives work closely with local, state, and federal law enforcement agencies. They also work closely with prosecuting attorneys throughout the prosecution phase of an alleged offender.



 Death Investigations (natural, homicide, suicide, and accident).

 Assaults (including or excluding a weapon)
 Arson
 Robberies (armed and unarmed)
 Sexual assault investigations (adults and children)
 Vulnerable adult abuse.
 Frauds and forgeries
 Embezzlement
 Home invasions, burglaries, and larcenies
 Narcotics Investigation (surveillance and execution of search warrants)
 Traffic crash investigation and reconstruction
 Examination of digital evidence (including computers)

Detectives are appointed Medical Examiner’s Investigators for the Lapeer County Medical Examiner’s Office. The Medical Examiner is responsible for determining the cause and manner of every death that occurs within Lapeer County.




Detective Bureau Contact Information

The Detective Bureau consisted of four deputies.

A unit is supervised by a Lieutenant with three Sergeants designated as Detectives. They have normal schedules and rotate on call for after hours and weekends. The detective bureau has a detective available 24 hours a day- seven days a week.

Lt. Gary Parks                                     810-245-1382            
D/Sgt. Chad Polmanteer                     810-245-1335             
D/Sgt. Jason Parks                             810-245-1381             
D/Sgt. Robert Wells                            810-245-1442             
Tip Line:                                             810-245-1374