The Miranda Rights got its name from the Miranda v. Arizona case. Miranda was arrested in March 1963 under the suspicion that he was involved in the kidnapping, rape and armed robbery of an 18-year-old woman in Phoenix, Arizona. During police interrogation, he admitted to committing the crime and signed a confession that stated that he understood his rights as a suspect. Due to this error, he was proven guilty of the crime based on his own confession and convicted to 30 years in prison. However, while he was in prison, the American Civil Liberties Union (ACLU) appealed the first ruling on the grounds that he had made a confession without knowledge of his rights as a suspect. As a result, it was forced and untrue.