What status is essential for placing a detainer notice on a wanted person?

The correct answer is that the status essential for placing a detainer notice on a wanted person is "Located." When a person is wanted, the authorities need to know the individual’s whereabouts to place a detainer notice effectively. A detainer is a request to hold a person in custody for law enforcement purposes, usually until they can be extradited or brought to trial for a crime.

Having an individual's status as "located" means that their physical location has been confirmed, providing law enforcement with the necessary information to proceed with detaining or arresting the individual. Without knowing where the person is, it would not be feasible to put a detainer in place since law enforcement wouldn't have the means to act upon it.

The other statuses do not provide the requisite confirmation of the individual’s current physical location. "Confirmed," for instance, may refer to the validation of a warrant or criminal record but does not indicate that law enforcement knows where to find the person. "Apprehended" would imply that the individual has already been taken into custody, while "reported" refers to the status of information received about the person, which again does not guarantee that law enforcement can act on that information to detain them. Thus, knowing that the wanted person