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Areas of Expertise

The Service de police de Châteauguay boasts many areas of expertise that allow us to offer a full range of services across the entire territory. Whether we are patrolling, investigating or working closely with local organizations, the entire police service has only one goal: to protect and serve the community in multiple ways.

Three main divisions encompass the local services offered. Here is a short description of each.

  • The mandate of the Division de la surveillance du territoire is to patrol and respond to calls in all the cities served, in keeping with the Mission and Values of the police service.

    The division is in continuous operation and its activities are varied and numerous. For example:

    • Patrol, keeping in mind specific and unique issues of each area
    • Preventive and coercive activities to resolve problems that affect the residents’ quality of life and sense of security
    • Enforcement of federal, provincial and municipal laws
    • Planning, organization, direction and control of various law enforcement services and policing operations
    • Support for the other divisions of the police service
  • The mandate of the Division des enquêtes criminelles is to investigate issues reported by the patrollers in order to find and pursue the perpetrators of crime. It is responsible for investigating the following crimes:

    • Theft, fraud and break-and-entry
    • Narcotics offences
    • Kidnapping, missing persons and runaways
    • Sexual assault and sexual offences
    • Murder where arrest is imminent
    • Assault and attempted murder
    • Fatal or serial fires

    To do so, the investigators:

    • Interview witnesses and victims
    • Interrogate suspects
    • Write investigation reports
    • Submit their work to the courts

    Forensic Identification and Seized Property Management Section

    The mandate of the Section identité judiciaire et gestion des biens saisis is to provide the technical skills to:

    • Find clues (such as fingerprints) at crime scenes
    • Process evidence in the laboratory or send it to the forensic medicine laboratory in Montréal

    The evidence may lead to the arrest of one or more suspects.

    The seized property branch has custody of all seized and found property. The personnel also take part in the forensic process by preparing reports and documents and testifying as specialists in the courts.

    Criminal Information and Analysis Bureau

    The mandate of the Bureau d’analyse et de renseignements criminels is to:

    • Collect, analyse, classify, verify and disseminate various kinds of information concerning potential suspects or clues collected to solve crimes
    • Identify, anticipate, prevent and neutralize activities related to organized crime in the territory
    • Circulate, share and disseminate information within the organization
    • Exchange information with other law enforcement organizations and external partners

    Confidential info line

    If you have information that may help a police investigation, you can call the free confidential information line at any time:


    You can leave a detailed message on the info line. If you want someone to call you back, please leave your phone number. Your call will be anonymous.


    This line is to report on a crime or criminal activity during a non-emergency situation that does not require immediate police action. For a situation or incident that requires police intervention, dial 911.

    Valleyfield courthouse

    Court Liaison Unit

    The mandate of this unit is to serve as a single access point between the police service and the various courts. The liaison officers provide quality control on completed files to comply with the appearance process for detainees. They also take charge of summonses and requests for further investigation.

  • The Division des services auxiliaires includes three sections: community and media relations, road safety and training.

    Community and Media Relations

    As well as being responsible for media relations, this section also promotes the neighbourhood policing model with interventions based on these four key principles:

    • Bridge-building with the public
    • Partnership with institutions
    • Problem-resolution approach
    • Reinforcement of preventive measures

    Road Safety Section

    This section is responsible for promoting safety not just on the roads but also on the water, snowmobiling trails and off-road trails, using specialized patrols. The officers in this unit are called on to support certain operations in the territory (transportation of detainees, crime scene oversight and protection, escorting, etc.) as well as contributing to the safety of all road users (pedestrians, cyclists and drivers) in the entire territory served by the Service de police.

    Training Section

    All members of the police service benefit from a professional development program every year that focuses on both skill maintenance, including requalification, and the development of new skills and aptitudes.

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