A detainer is placed on a wanted person record under which circumstance?

A detainer is a request issued to law enforcement agencies or correctional facilities to hold an individual in custody so that they can be transferred to another jurisdiction, typically for prosecution of additional charges. In the case of a wanted person record, a detainer is specifically placed when that individual is being held on local charges. This ensures that even if they are released from local custody, they can still be apprehended by the agency that has issued the detainer for further legal proceedings related to other charges.

The focus here is on the underlying legal framework that allows authorities to maintain custody of a person to ensure they can face the necessary legal processes affiliated with the charges tied to the detainer. In this instance, the presence of local charges confirms that the individual is currently in a detention situation where a detainer would be relevant and necessary to manage their custody status with regard to other pending matters.