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If you are calling about a report that is already on file, and there is no emergency, dial (650) 522-7650, M-F, 8:00 a.m. to 5:00 p.m.
If you have drug-related information regarding an incident that is in-progress at this moment, and can be viewed and/or dealt with by a uniformed police officer, please call the San Mateo Police dispatcher at (650) 522-7700, and report it as a crime in progress.
If you have information relating to drug-related criminal activity that is not in-progress, or is in-progress but cannot be viewed and/or dealt with by a uniformed police officer, please call the San Mateo Police Department's Narcotics Hotline at (650) 522-7690.
If you reach a recorder and want to be contacted, please leave a call-back number and your name. If you prefer not to be contacted, you may also call the "Secret Witness" number, which is (650) 522-7676 and leave anonymous information.
The San Mateo County Narcotics Task force deals with drug-related problems outside the city limits and jurisdiction of the City of San Mateo. If your information applies to these areas, please call them at (650) 573-3991 to leave a message.
Free mediation services are available by contacting the Peninsula Conflict Resolution Center at (650) 513-0330 or the San Mateo County Mediation Program at (650) 373-3490. Peninsula Conflict Resolution Center
For general questions regarding detectives or investigations, call (650) 522-7650 from 8:00 am to 5:00 pm, Monday through Friday.