Captain Mark Plazinski, Director

Captain Dinesh Patil, Director

The purpose of the Special Investigations Division is to arrest those individuals using or selling controlled dangerous substances; disrupt major drug trafficking organizations; investigate organized crimes such as gambling, prostitution, and human trafficking cases; and arrest violent fugitives and those responsible for gang-related crime. The Division is divided into two sections:  the Drug Enforcement Section and the Criminal Enterprise Section.
Main Office Number – 240-773-5959

The Drug Enforcement Section is comprised of:

 Drug Investigations Unit

The Drug Investigations Unit targets low to mid-level drug dealers who operate within Montgomery County.  Investigators conduct undercover buys from drug dealers and execute search warrants to confiscate contraband and other evidence.

Pharmaceutical Unit

The Pharmaceutical Unit investigates prescription fraud cases, Medicaid fraud, as well as medical professionals who prescribe medication illegally.

Interdiction Unit

The Interdiction Unit conducts drug interdiction details at storage facilities, bus stations, train stations, hotels, and mail facilities. The unit is responsible for seizing illicit drugs being transported to or through Montgomery County by various means. The unit has two drug detection dogs who assist with identifying illegal packages and contraband.

Conspiracy Unit

The Conspiracy Unit targets major drug trafficking organizations that operate within Montgomery County. These investigations are long-term by design and are often prosecuted at the federal level. Investigators assigned to the Conspiracy Unit work closely with various federal law enforcement agencies including the U.S. Attorney’s Office.

The Criminal Enterprise Unit is comprised of:

Vice and Intelligence Unit

The Vice and Intelligence Unit handles intelligence gathering for the department and is responsible for identifying threats to our community. Two investigators are assigned to the FBI’s Joint Terrorism Task Force (JTTF) to investigate both International and Domestic Terrorism. The unit also investigates all gambling, prostitution and human trafficking cases.

Repeat Offender Section

The Repeat Offender Section is responsible for apprehending fugitives who are wanted for violent crimes and repeat offenders who are a danger to the community. Investigators assist various investigative units within our agency and often assist other law enforcement agencies.

Criminal Street Gang Unit

The Criminal Street Gang Unit provides support and case enhancement in criminal investigations in which there is a gang nexus.  The Criminal Street Gang Unit is available by email at

Electronic and Technical Support Unit

The Electronic and Technical Support Unit (ETSU) is responsible for ensuring effective utilization of the Department’s electronic surveillance equipment. Investigators provide a wide variety of technical capability to support the various units within and outside the Division.