Accused 15-Year-Old Murderer to Get New Trial

A misstep by police has led Amber Wright's confession to be ruled inadmissible.
3:35 | 06/02/14

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Transcript for Accused 15-Year-Old Murderer to Get New Trial
first that case of a teenager who brutally murdered her ex-boyfriend. Amber Wright confessed to the killing. She and four others were convicted but now has a new trial and ABC's gio Benitez is here with the details. Good morning, gio. Reporter: Good morning. Amber was just 15 when she got involved in this deadly love triangle. She was sentenced to life in prison but now a shocking police misstep could set her free. Heard gunshot after gunshot. Reporter: This morning a major Miranda rights mess. An appellate court declaring amber Wright's confession tape inary 2012 murder trial inadmissible and awarding her a new trial. The red-headed teen was sentenced to life in prison after prosecutors claim she lured her ex-boyfriend, 15-year-old Seth Jackson, into a Florida home where police say he was brutally murdered by her new boyfriend, her brother and two others. This 15-year-old sitting in handcuffs was responsible for the murder of another 15-year-old. Reporter: And when Wright confessed to police the first time, they forgot to read her Miranda rights. That confession tape wasn't allowed at trial. But this one was. The plan came together in about two minutes. Okay, but that plan happened Sunday night that you were going to kill seat Jackson. This time police had read her Miranda rights and asked her to repeat her confession. Before I told the truth I felt like this was a 10 to 20 pound weight on my chest. Like when is it ever going to go away. Reporter: Wright's attorney filed an appeal claiming her statements coerced. On Friday three judges ruled the second confession tape shouldn't have been used in court and granted Wright a new trial. She didn't know what was going on. She was traumatized. They should have spoke with me with her. Reporter: Wright as reported by part of a dangerous love triangle involving Jackson and the convicted gunman Michael Bargo. Wright manipulated Jackson into coming to the home claiming she wanted to get back together with him. Jackson's mom who took the stand in the 2012 trial told ABC news on Sunday she is still trying to make sense of the news but believes Wright should still be held accountable for her actions. And of Wright's two brother, one is already in prison for the crime and the other who was sentenced to life is also getting a new trial. He was 16 at the time. Meanwhile, Michael Bargo, Wright's boyfriend and so-called mastermind 121 and the youngest on Florida's death row. Gio, thanks. To Dan Abrams we talk about this. Complicated. One confession before she's read her rights, one after. This is a close legal case. Remember, the basic principle is if you're in custody and you're questioned and you're not read your Miranda rights then that gets kicked out. Excluded from the case. In this case, the question is, was the second and third statements that she made, both incriminating all effectively part of one interrogation? What the court said is, everyone agrees here that she was not read her Miranda warning in connection with her first incriminating statement. The police then take a break. They come back, they read her the Miranda and start questioning her again. What the court is saying for a 15-year-old and her age was very important in their ruling she wouldn't realize this was now starting anew and as a result all effectively part of the same interrogation. Remember, this doesn't mean she's getting off. It just means she's getting a new trial where they can't use this confession. And makes it more differ to get a conviction. Absolutely. This was a very important piece of evidence in connection with the case. Thanks very much.

This transcript has been automatically generated and may not be 100% accurate.

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