What is one of the criteria for arresting to prevent further offences?

The criterion of being "reasonably necessary" is pivotal in the context of arresting an individual to prevent further offences. This principle ensures that law enforcement officers can act within the framework of the law, making an arrest only when it is proportional and justified in regard to the situation at hand.

In practical terms, it means that the officer must have reasonable grounds to believe that the individual poses a continuing threat or risk of committing further offences if not arrested. This can involve assessing the immediacy of the threat, the potential harm to the community or victims, and the behaviour of the individual being considered for arrest. Furthermore, following this criterion helps protect the rights of individuals and limits arbitrary use of police power, emphasizing that prevention measures should be necessary and justified based on the circumstances.

In contrast, the other factors would not provide a suitable standard for arresting someone to prevent further offences. "Simple assumption" lacks a factual basis and does not involve an assessment of the situation. "Obstruction of justice" pertains to a different legal framework, typically regarding actions that hinder law enforcement processes. "Imminent threat" could imply a more immediate danger but does not necessarily encompass the broader assessment that "reasonably necessary" demands, which considers the necessity of an