What is a reason police may arrest someone to retrieve evidence related to an offence?

When police arrest someone to retrieve evidence related to an offence, obtaining property directly connects to the need for collecting tangible evidence that may assist in the investigation or prosecution of a crime. In legal contexts, property can include anything from stolen goods, weapons used in an offence, or other physical evidence crucial to establishing the facts of the case.

This action is part of the investigative process, where law enforcement may need to secure an individual in order to conduct searches or seize items related to the crime. This also ensures that the evidence is preserved and not tampered with while the investigation is ongoing.

The other choices do not encompass the primary purpose of making such an arrest in relation to evidence collection. Upholding composure is more about maintaining order rather than directly related to evidence retrieval. Issuing warnings does not pertain to acquiring evidence, and investigating further, while related to the police's broader duties, does not specifically address the act of arresting someone to secure evidence. Thus, the focus on obtaining property encapsulates the justifications for such an arrest in the context of law enforcement duties.