Core Policing Responsibilities Flashcards

A police officer responds to a call where a person is behaving erratically in a public park. The individual has not committed any criminal offence but is clearly in a state of mental health crisis. Under the Mental Health Act (Ontario), which action most accurately reflects the officer's core responsibility in this situation?

Answer: Apprehend the individual without a Form 1 if the officer has reasonable and probable grounds to believe the person is a danger to themselves or others and is suffering from a mental disorder

Under s. 17 of the Mental Health Act (Ontario), a police officer may apprehend a person without a Form 1 (physician's order) when the officer has reasonable and probable grounds to believe the person has or is threatening to cause bodily harm to themselves or others and is apparently suffering from a mental disorder. This is a core policing responsibility — preserving life and safety — that does not require consent of next of kin or a prior criminal act.

During a lawful traffic stop, an officer discovers the driver is a suspect in an unrelated homicide investigation. The officer does not have an arrest warrant. Which of the following statements best reflects the officer's authority and core responsibility?

Answer: The officer may arrest the driver without a warrant if there are reasonable grounds to believe the person committed the indictable offence, even if the offence did not occur in the officer's presence

Under s. 495(1)(a) of the Criminal Code, a peace officer may arrest a person without a warrant who has committed an indictable offence or who, on reasonable grounds, the officer believes has committed or is about to commit an indictable offence. Homicide is an indictable offence. There is no requirement that the offence occur in the officer's presence for indictable matters, nor is a warrant mandatory when reasonable grounds exist. The Charter (s. 9) prohibits arbitrary detention, but a rights-based arrest grounded in reasonable grounds is lawful.

An officer is conducting surveillance on a residence suspected of being a drug trafficking operation. During surveillance, the officer witnesses what appears to be a hand-to-hand drug transaction outside the residence. A second officer then enters the residence without a warrant, believing exigent circumstances justify the entry. Which standard most accurately governs whether the warrantless entry was constitutionally valid?

Answer: Exigent circumstances require both an objectively reasonable belief that evidence destruction or imminent harm is likely AND that obtaining a warrant was not practicable given the urgency

Canadian courts applying s. 8 of the Charter (right against unreasonable search and seizure) have held that exigent circumstances can justify warrantless entry into a residence, but the standard is demanding. Per R. v. Paterson and related jurisprudence, the officer must have both an objective and subjective reasonable belief that delay to obtain a warrant would result in evidence destruction, injury, or escape — AND the urgency must make obtaining a warrant impracticable. Mere suspicion or subjective belief alone does not suffice. Witnessing activity outside does not automatically create exigency for interior entry.

A police officer is called to a domestic dispute. The complainant (a spouse) recants their original statement upon the officer's arrival and says they do not wish to pursue charges. The officer has observed visible injuries consistent with assault. What is the officer's core responsibility in this scenario under Ontario's approach to domestic violence cases?

Answer: The officer has an independent duty to investigate and, if reasonable grounds exist, lay charges regardless of the complainant's wishes, as the Crown is the prosecuting party — not the victim

Ontario's approach to domestic violence, reflected in the Ontario Domestic Violence Action Plan and directives under the Police Services Act, requires officers to treat domestic violence as a criminal matter independent of victim wishes. The Crown (not the victim) decides whether to proceed with prosecution. If the officer has reasonable grounds — including observed injuries — to believe an assault occurred, the officer's core responsibility is to investigate fully, document evidence, and lay charges where grounds exist. A victim's recantation does not extinguish reasonable grounds already established. The peace bond option does not substitute for charges when grounds for arrest exist.

A chief of police is reviewing a use-of-force incident where an officer used a conducted energy weapon (CEW) on a fleeing suspect who posed no immediate threat to bystanders or officers at the moment of deployment. Under Ontario's Use of Force framework and the OACP model, which principle was most likely violated?

Answer: The Proportionality principle — the level of force used was not proportionate to the threat presented at the moment of deployment

Ontario's Use of Force model (Ontario Regulation 926) and OACP guidance require that force applied must be proportionate to the threat faced at the time of its application. A CEW is a significant use of force intended to address active resistance or imminent threat. Deploying a CEW against a suspect who is fleeing but poses no immediate threat to officers or others at the point of deployment violates proportionality — the force level exceeded what was reasonably necessary in that moment. 'Necessity' relates to whether any force was needed at all; proportionality governs its degree. De-escalation and backup requirements are procedural steps, not labeled principles of the framework.

An officer receives a tip from a confidential informant (CI) that a specific individual is storing illegal firearms at a residence. The CI has provided accurate information in two prior cases. The officer applies for a search warrant under s. 487 of the Criminal Code. The justice reviewing the Information to Obtain (ITO) is assessing whether reasonable grounds exist. Which factor carries the most legal weight in establishing the reliability of the CI's information for ITO purposes?

Answer: The CI's past track record of accuracy and the corroboration of any aspects of the current tip through independent police investigation

Canadian courts, following R. v. Debot and R. v. Garofoli, assess CI-based ITOs using a totality-of-the-circumstances test. The two most critical factors are: (1) the informant's past track record of reliability (prior accurate tips), and (2) independent corroboration of the current tip by the police. Neither a formal affidavit from the CI nor length of registration is legally required — hearsay from a CI is permissible in an ITO as long as reliability is established through these factors. An officer's subjective belief alone, without objective indicia of reliability, is legally insufficient. Courts conduct a robust review of the ITO to ensure the justice was not misled.