The Nevada County Sheriff Special Investigations Unit (SIU) is a multi-agency unit supervised by the Sheriff’s Office. If you have any information regarding illegal drug / narcotic activity please contact the confidential Narcotic Tip Hotline at 530-470-2400.
Funding & Responsibilities
The SIU receives funding from various state and federal grants. Each member of the unit must complete many hours of training in a variety of areas including (but not limited to) drug laws, drug recognition and identification, drug composition, search warrant policies and procedures, surveillance and evidence collection. The SIU is responsible for investigating information regarding narcotics trafficking, the manufacturing of controlled substances and the cultivation of illegal marijuana (indoor and outdoor grows).
Marijuana Cultivation Signs
With indoor marijuana cultivation rising, the SIU would like to educate the public on a few signs that may be an indication that your neighbor is cultivating marijuana within their home. Indoor grows are found in all types of neighborhoods.
Signs may include:
Air-conditioning unit continuously running, day and night, even when outside temperature is cool
Bright light or glowing from windows
Buzzing or humming sound from light ballasts
Carbon dioxide tanks
Garage doors never opened
No furniture brought to location
No one living at residence
Obvious modifications to electrical panels
Odor of marijuana
Portable air-conditioning units
Remodeling or demolition as soon as subjects move in
Roll-up garage door with the windows covered
Sound of attic exhaust fans running
Subjects have little or no contact with neighbors
Windows covered / sealed, blinds, window coverings