Bureaus- Investigative Services

Assistant Chief - Willie Parker-Loan

Email:  Willie.Parker-Loan@montgomerycountymd.gov

Executive Officer: Lieutenant Brain Tanzi  Email:  Brian.Tanzi@montgomerycountymd.gov

The Investigative Services Bureau is the primary investigative branch for serious and violent crime in Montgomery County. Detectives are assigned to one of the four divisions in this Bureau. They are responsible for investigations leading to the detection, identification, apprehension, and prosecution of persons responsible for committing serious crimes in the County. The Bureau is comprised of five major divisions.

Criminal Investigations Division (CID)

Captain Marc Erme, Director
Main Number: 240-773-5060
Email:  CIDDirector@montgomerycountymd.gov

Lieutenant Andrew Suh, Deputy Director

The Criminal Investigations Division consists of the following:

Forensic Science Evidence Management Division (FSEMD)

Ms. Jennifer Breaux, Director
Main Number: 240-773-5134
Email:  POL.FSEMDDirector@montgomerycountymd.gov

The Forensic Science Evidence Management Division is responsible for analyzing and managing evidence. The FSEMD consists of the following:

  • Evidence Management Section
  • Crime Laboratory Section
    • Forensic Biology Unit
    • Forensic Chemistry Unit
    • Electronic Crimes Unit
    • Crime Scene Unit
    • Firearms Examination Unit
    • Latent Print Unit
    • Bloodstain Pattern Analysis Program

​Internal Affairs Division (IAD)

Captain Brian Merryman, Director
Main Number: 240-773-6000
Email:  IAD.MCP@montgomerycountymd.gov

Lieutenant Lisa Engestrom, Deputy Director

The Internal Affairs Division is responsible for conducting investigations into allegations of misconduct against the police department's officers and professional staff. 

Major Crimes Division (MCD)

Captain Sean Gagen, Director
Main Number: 240-773-5070
Email:  POL.MCDCMDR@montgomerycountymd.gov

Lieutenant Sunyoung Kim, Deputy Director

The Major Crimes Division consists of the following:

  • Auto Crimes Enforcement Section (ACES)
  • Fugitive Section
  • Homicide Section
  • Missing Persons/Cold Case Section
  • Robbery Section
  • Victim/Witness Assistance Unit

Special Investigations Division (SID)

Captain Ian Clark, Director
Main Number: 240-773-5959
Email:  POL.SIDDirector@montgomerycountymd.gov

The Special Investigations Division is responsible for administrating the Facial Recognition Program and consists of the following:

  • Criminal Enterprise Section
    • Criminal Intelligence Analysis Unit
    • Criminal Street Gang Unit
    • Digital Intelligence and Analysis Unit
    • Electronic/Technical Surveillance Unit
    • Repeat Offender Unit
    • Vice/Intelligence Unit
      • Human Trafficking
      • Joint Terrorism Task Force
  • Drug Enforcement Section
    • Asset Forfeiture Unit
    • Drug Interdiction Unit
    • Drug Investigative Unit
    • Firearms Investigative Unit
      • Privately Manufactured Firearms (PMFs or Ghost Guns)
    • Major Offenders/Conspiracy Unit
    • Pharmaceutical Unit

Special Victims Investigations Division (SVID)

Captain Jeffrey Bunge, Director
Main Number: 240-773-5400
Email:  POL.SVIDDirector@montgomerycountymd.gov

Lieutenant David Cohen, Deputy Director
Lieutenant Kristina Hedgepeth, PhD, Deputy Director

The Division is responsible for investigating sex crimes against children and adults, physical child abuse, runaways, missing children, felony domestic violence, elder abuse/vulnerable adult abuse, and registration violations of sex offenders. The SVID consists of the following: