Private citizens who are acting totally on their own and interrogating suspects do not have to give Miranda warnings.

Question

Quizplus · Accepted Answer

Private citizens who are acting on their own are not considered to be government agents, so they are not bound by the Miranda warning requirements. However, if the private citizen is acting in cooperation with law enforcement, they may be considered to be an agent of the government and would be required to give Miranda warnings.

Private Citizens Who Are Acting Totally on Their Own and Interrogating