Police can detain an individual if there are reasonable grounds to suspect in all the circumstances the the individual is connected to a particular crime and that the detention is reasonably necessary on an objective view of the circumstances. These circumstances include the extent to which the inference with individual liberty is necessary to the performance of the officer’s duty, to the liberty inferred with, and to the nature and extent of the interference.” The Supreme Court of Canada articulated when it was constitutional for police officers to search or perform a pat down on an individual, and what reason justified on the invasion of privacy. As a police officer performs any of these actions can lead to finding a possession of a weapon
