Prosecutors say they may retry a Florida man on first-degree murder charges in the fatal shooting of a teenager after an argument over loud music.

A jury convicted Michael Dunn, a 47-year-old software developer, on Saturday of attempted murder for shooting into a carful of teenagers after the argument, but jurors couldn't agree on the most serious charge of first-degree murder. A mistrial was declared on that charge. State Attorney Angela Corey said her office would consider seeking a retrial.

Meanwhile, defense attorney Cory Strolla said he plans to appeal based on several issues, including how the jury could reach guilty verdicts on four counts and deadlock on another.

Dunn was charged with fatally shooting 17-year-old Jordan Davis, of Marietta, Ga., in 2012 after the argument over loud music coming from the SUV occupied by Davis and three friends outside a Jacksonville convenience store. Dunn, who is white, had described the music to his fiancee as "thug music." He claimed he acted in self-defense.

The trial was Florida's latest to raise questions about self-defense and race, coming six months after George Zimmerman was acquitted in the shooting of 17-year-old Trayvon Martin in Sanford, about 125 miles south of Jacksonville. The Dunn trial was prosecuted by the same State Attorney's Office that handled the Zimmerman case.