A person is entitled to have the rights read to them if they are in custody and subjected to interrogation. If there is just an investigation, questioning people who may be witnesses or have knowledge, no need because they are not in custody. Same with a defendant who is not in custody (although cops will generally play it safe and Mirandize a target or potential target of an investigation.) A person arrested and taken to jail without questioning some times gets their rights but it does not matter if they do. The only "punishment" if you will for the failure to Mirandize is if the person is questioned and gives inculpatory (guilty) information, that information will be suppressed (unless police can show they would have gotten it from another source.) Very complicated. Also, there are some cases now that are trying to water down the Miranda case further saying, essentially, that a person who has been through the system and knows the drill does not necessarily need his rights given because he has heard it all before. That will be the subject of further litigation. Also, if a person in custody just blurts out inculpatory stuff, not in response to questioning, then that is admissible. But again, the circumstances could vary that because there have been cases where cops were driving in a suspect and talking about how sad for the mother that the dead person's body can't be found, yada yada, with the intent to get the guy to up the body, and he does. That may, or may not, be suppressed, lots of factors to consider.
Answered on Mar 05th, 2013 at 2:47 PM