Looks pretty great there and coming up we'll begin with those first words from a juror in that loud music trial we've been covering. Michael Dunn convicted of attempted murder but the jury dead much... See More
Looks pretty great there and coming up we'll begin with those first words from a juror in that loud music trial we've been covering. Michael Dunn convicted of attempted murder but the jury dead much locked over the question of whether he murdered 17-year-old Jordan Davis. Jordan's parents are here to speak live with robin. First Ryan Owens brings us the juror's story. I believed he was guilty. Reporter: But the first juror in the Michael Dunn case to speak out says not everyone in the jury room agreed. We pretty much knew after about two days with the whole self-defense thing that we were going to be hung. Reporter: In an exclusive interview with ABC news, juror number 4 says three members of the jury believed the story of self-defense Dunn told from the stand. He's showing me a gun and he's threatening me. Reporter: In the end she says the split was 9-3 with most believing the 47-year-old software developer should be held accountable for the death of 17-year-old Jordan Davis. Life was taken. I mean, there is no longer a Jordan Davis and there's only one reason why that is. As to count one I will declare that mistried. Reporter: That meant a mistrial on the murder count. The state's attorney is vowing to retry him on that. The teen's mom also promising to keep up the fight. We will continue to stand, and we will continue to wait for justice for Jordan. Reporter: The jury did convict Dunn on three counts of attempted murder for firing at the three other boys in the car that night. A year and a half ago outside a Jacksonville gas station after an argument over loud music. Oh, my god. Somebody is shooting. We all agreed there was an imminent threat to these young men that were in the car. Reporter: Under Florida law, Dunn will spend the next 60 years behind bars. Nothing will bring back their son. Nothing. I am sorry, of course, I hope that they feel that we didn't do them a disservice. Reporter: For "Good morning America," Ryan Owens, ABC news, Jacksonville, Florida.
This transcript has been automatically generated and may not be 100% accurate.